From alvest at brakiri.com  Wed Jun  1 06:07:37 2016
From: alvest at brakiri.com (Albert Vest)
Date: Wed, 1 Jun 2016 06:07:37 -0400
Subject: [CentralOH] Fwd: Python job, Santa Clara, CA
In-Reply-To: <00f701d1bb5c$0614d930$123e8b90$@idctechnologies.com>
References: <00f701d1bb5c$0614d930$123e8b90$@idctechnologies.com>
Message-ID: <2b9407eb-d6df-8812-d93f-414b5eec26cd@brakiri.com>

This was in my email. Sharing because, while I'm not looking to relocate 
to CA, someone else on the list might be.
Albert.

-------- Forwarded Message --------
Subject: 	Python Developer (Linux/Python/security)-Santa Clara, CA
Date: 	Tue, 31 May 2016 12:46:23 -0400
From: 	Alekhya K <alekhya at idctechnologies.com>
To: 	Alekhya K <alekhya at idctechnologies.com>



*Hi,*

We have an urgent requirement for *?**Python Developer 
(Linux/Python/security)**?* this is a *contract *project based in 
*?**Santa Clara, CA**? *location.**

*Role: Python Developer (Linux/Python/security)*

*Location: Santa Clara, CA*

*Experience: 7+Yrs*

1. Strong experience in developing applications using Python.

2. Knowledge of Django framework is good to have.

3. Some C language is highly preferred.

Description: cid:image001.gif at 01D1B506.14081400

**

*Alekhya Karri*

IDC Technologies, inc

1851 McCarthy Blvd

Milpitas, CA 95035

Work: 408-963-0106
Email: alekhya at idctechnologies.com <mailto:alekhya at idctechnologies.com>

Website:www.idctechnologies.com <http://www.idctechnologies.com/>
___________________________

*Empowering Technologies Services*

Remote Services| IT Services |BPO|

IT Consulting|Staffing Solutions|

_____________________________

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From james at atlantixeng.com  Thu Jun  2 12:01:18 2016
From: james at atlantixeng.com (James Bonanno)
Date: Thu, 2 Jun 2016 12:01:18 -0400
Subject: [CentralOH] Nikola Static Site
Message-ID: <5750584E.8020809@atlantixeng.com>

I am wondering if anyone has built and deployed a site with Nikola 
static site generator. If so, wondering what your ratings of Nikola 
would be. I've created a site by haven't deployed it yet, and still 
looking at ways to make it more of a hybrid of a regulator website and 
blog. Thanks, James

From jep200404 at columbus.rr.com  Thu Jun  2 20:01:37 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Thu, 2 Jun 2016 20:01:37 -0400
Subject: [CentralOH] =?utf-8?q?2016-05-23_=E6=9C=83=E8=AD=B0_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz86IGNvdW50aW5nIHdvcmRzLCBmb28gaW4gc2V0LCBm?=
 =?utf-8?q?oo_in_list=2C_generators_galore=2C_re=2Esplit=28=29=2C_re=2Efin?=
 =?utf-8?q?dall=28=29=2C_aws_lambda=2C_requests=2C_islice=2C_salatin=2C_as?=
 =?utf-8?q?yncio_uv?=
Message-ID: <20160602200137.1963de61.jep200404@columbus.rr.com>

Thanks again to Pillar and Chris Baker for hosting us at Pillar's Forge.

There's a heck of a lot more Python code in this month's scribbles than usual.
There is much to learn from.

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

PyOhio 2016

    T-Shirts are cool. Buy one.
    Eric and Jan modeled for pictures.

    Please submit talk proposals for PyOhio
    beginning speakers are very welcome and encouraged to submit a talk
        1/4 to 1/3 of talks are reserved for people
        who have never talked at a conference before
    Deadline has been extended to June 3

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

March Temperature Prediction Challenge

https://github.com/cohpy/challenge-201603-temps/blob/master/predictions.txt

Andrew Kubera won temperature guessing challenge.
Won hat.
What happened to the other prizes, such as the HP cooler and HP hoodie?

The Daily Growler https://www.thedailygrowler.com/

challenge-201603-temps/answer5/cohpy_weather_sommerville.py

    Python3 versus Python2

        Has code to complain and quit if it is not run by python2,
        but that code has syntax error when run by python3.

        Eric Floehr showed how to easily convert python2 code to python3 code
        with 2to3 program.

        2to3 is part of python3

            converts most of python2 code to python3 code

                individual files, or whole directories

            2to3 -w -n ;# convert without backups: this is dangerous.

    Cute name: 'Nulluary'
        How about using None instead?

    indents by two

all challenge submitters (not just this challenge) got python stickers

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

found a 12' HDMI cable this time. (about half as long as last month)

First time to cohpy monthly meeting:
    Scott
    John

Compare eoo.py, foo.py, and goo.py below.
What do you like? Why?

    cohpy at forge:~/20160523$ cat eoo.py
    #!/usr/bin/env python2

    import sys

    if sys.version_info.major == 2:
        pass
    else:
        sys.stderr.write(
            'You are using Python version %s. This script only works with 2\n' %
            sys.version_info.major)
        sys.exit(1)
    cohpy at forge:~/20160523$ python2 eoo.py
    cohpy at forge:~/20160523$ python3 eoo.py
    You are using Python version 3. This script only works with 2
    cohpy at forge:~/20160523$

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

    cohpy at forge:~/20160523$ cat foo.py
    #!/usr/bin/env python2

    import sys

    if sys.version_info.major != 2:
        sys.stdout = sys.stderr
        print (
            'You are using Python version %s. This script only works with 2' %
            sys.version_info.major)
        sys.exit(1)
    cohpy at forge:~/20160523$ python2 foo.py
    cohpy at forge:~/20160523$ python3 foo.py
    You are using Python version 3. This script only works with 2
    cohpy at forge:~/20160523$

    # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

    cohpy at forge:~/20160523$ cat goo.py
    #!/usr/bin/env python2

    import sys

    assert sys.version_info.major == 2, (
        'You are using Python version %s. This script only works with 2.' %
        sys.version_info.major)
    cohpy at forge:~/20160523$ python2 goo.py
    cohpy at forge:~/20160523$ python3 goo.py
    Traceback (most recent call last):
      File "goo.py", line 7, in <module>
        sys.version_info.major)
    AssertionError: You are using Python version 3. This script only works with 2.
    cohpy at forge:~/20160523$

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

Aschinger Blvd is near Brazenhead

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

word counting challenge

seven entries
code is available at https://github.com/cohpy/challenge-201604-words

http://www.gutenberg.org/cache/epub/84/pg84.txt
    Will lock you out after only a few requests.

eric's

    uses virtualenvwrapper
    mkvirtualenv challenge-201604 -p /usr/bin/python3

    import textwrap
    os.get_terminal_size()
        more portable than os.environ['COLUMNS']

        stty

    did not define word

    pytest
    @pytest.mark.parametrize is fantastic

    75071 words

    the 4195
    and 2977
    i 2850
    of 2641
    to 2094
    my 1776
    a 1391
    in 1128
    was 1021
    that 1017

joe friedrich's

    range(0, n) -> range(n)

    Is word a valid one-letter word? Compare the following:

        word == 'A' or word == 'a' or word == 'I'

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        # tuples (and lists) are OK
        VALID_ONE_LETTER_WORDS = ('A', 'a', 'I')
        word in VALID_ONE_LETTER_WORDS

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        # Sets are fast, even when the set is large.
        VALID_ONE_LETTER_WORDS = set(('A', 'a', 'I'))
        word in VALID_ONE_LETTER_WORDS

    counting: compare the following:

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        new_dictionary = {}
        for word in ...:
            if word in new_dictionary:
                new_dictionary[word] += 1
            else:
                new_dictionary[word] = 1

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        new_dictionary = {}
        for word in ...:
            if word not in new_dictionary:
                new_dictionary[word] = 0
            new_dictionary[word] += 1

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        new_dictionary = {}
        for word in ...:
            new_dictionary[word] = new_dictionary.get(word, 0) + 1

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        from collections import defaultdict

        new_dictionary = defaultdict(int)
        for word in ...:
            new_dictionary[word] += 1

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        from collections import Counter

        word_counts = Counter(
            word for word in from_words_list
            if len(word) > 1 or word in VALID_ONE_LETTER_WORDS)

        word_counts.most_common(n)

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        refactor the above to:

        from collections import Counter

        def is_valid_word(word):
            return len(word) > 1 or word in VALID_ONE_LETTER_WORDS

        word_counts = Counter(
            word for word in from_words_list
            if is_valid_word(word))

        word_counts.most_common(n)

        # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

        How would you use pandas?

    Dante's Inferno had different headers.

    Python's libraries are fabulous.
    You'll get a feel for:

        You know, I'll bet somebody else has already done this
        and has some slick library that does what I want.

    It is amazing what you will find on PyPI.
    Search PyPI at https://pypi.python.org/pypi.

cw andrews'

    class oriented programming (not object oriented programming)
    What's the benefit of class oriented programming
    over object oriented programming?

    pretty plots!

    loads unix dictionary :-)!!! into a list :-(!!! (not a set)

    checking to see if each word was in the unix dictionary was slow
        (90 seconds)
        Is that because the unix dictionary was stored in a list
        instead of a set?

        Study:

            https://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20160523/cohpy-20160523-speed-of-searching-sets-and-lists.ipynb
            https://github.com/james-prior/cohpy/blob/master/20160523/cohpy-20160523-speed-of-searching-sets-and-lists.ipynb

    not_str_gens???

    re.split()
    re.findall()

    Study Brian's nested generators:

        https://nbviewer.jupyter.org/github/cohpy/challenge-201604-words/blob/master/bcostlow/Challenge.ipynb
        https://github.com/cohpy/challenge-201604-words/blob/master/bcostlow/Challenge.ipynb

eric miller (ezeeetm?)

    used aws lambda

        java
        javascript
        python (2.7 only)
            virtualenv with almost everything installed
            boto (critter in the amazon river)
                much better support for 2.7 than 3

        can trick aws lambda into running R by wrapping it from python.

        no __name__ == '__main__'
            use function instead
        no command line arguments
            pass json blob

        stdout goes to cloud watch logs

        they tricked lambda into running R (wrapped in python)

        URLs for a mirror that doesn't balk when asked too many times is mighty
        handy. Thanks Eric!

        http://www.gutenberg.lib.md.us/8/84/84.zip
        http://www.gutenberg.lib.md.us/8/84/84.txt
        Does UrlFactory work for ids in the teens?

        http://www.gutenberg.org/wiki/Gutenberg:Information_About_Robot_Access_to_our_Pages
        http://www.gutenberg.org/robot/harvest?filetypes%5B%5D=txt

    requests library is awesome
    the guy who created it is awesome, has created other libraries
    Kenneth Reitz

    s3 bucket
    mongodb

    16 hours to crunch all Gutenberg texts
    100 lanes wide

brian costlow

    used generator to skip over gutenberg header
    Combined simple nested generators with Counter from collections.
        prettiest code that I saw
            (there may be prettier code that I did not look at)

    need to study push_counter()

jan milosh

    Wow!: Combines words that were split across lines.

    Should be easy to convert to use generators instead of lists.

    Pythonic tests!

may challenge is about generators

    https://github.com/cohpy/challenge-201605-generators/blob/master/README.md

    two dimensional walk
    nested generators
    sound generator

    pull request
        directory with github user name.

    Study:

        Nested generators
            https://mail.python.org/pipermail/centraloh/2013-June/001718.html

        very simple examples of "yield from"
            https://mail.python.org/pipermail/centraloh/2016-May/002816.html

                replace
                    list(x[0] for x in zip(foo(), range(10)))
                with
                    from itertools import islice
                    list(islice(foo(), 10))

brian costlow

    generators

         http://nbviewer.jupyter.org/github/cohpy/challenge-201604-words/blob/master/bcostlow/COhPy Generator Talk.ipynb
         https://github.com/cohpy/challenge-201604-words/blob/master/bcostlow/COhPy Generator Talk.ipynb

    return value is StopIteration error value.

    asyncio

    http://dabeaz.com/generators/

    Highly recommended presentations about generators:

        Generator Tricks for Systems Programmers
        http://www.dabeaz.com/generators-uk/

        A Curious Course on Coroutines and Concurrency
        http://www.dabeaz.com/coroutines/

        Generators: The Final Frontier
        http://www.dabeaz.com/finalgenerator/

    check out https://docs.python.org/2/library/collections.html#collections-abstract-base-classes

    six
    https://pypi.python.org/pypi/six

    light bulbs should be going off for asyncio

    Avoid reinventing the wheel.
    Check out itertools and collections.

    Although you should be duck typing as much as possible in Python,
    build from abstract base classes from collections.

        docs.python.org/2/library/collections.html#collections-abstract-base-classes
        https://docs.python.org/3/library/collections.html

    github.com/bcostlow

new challenge, submit:

    polish stuff I've already done

        break out of nested loops by using a generator (Raymond Hettinger)

        http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160429/dojo-20160429-2016-Mar-COhPy_Challenge_Rough-20160513-1144.ipynb

            pretty: cell #52
            nasty: last code cell

        clean up old nested even fib from 2013 for python3,
            (find project euler notebooks)
                find the euler where I tweaked for speed
            s/gen/iterable/
            https://mail.python.org/pipermail/centraloh/2013-June/001718.html

        yield from https://mail.python.org/pipermail/centraloh/2016-May/002816.html

    pass pylint

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

What is a cleaner way of limiting an iterable to the first n items
than  list(x[0] for x in zip(foo(), range(10)))?
https://mail.python.org/pipermail/centraloh/2016-May/002816.html

    islice from itertools!

    islice(foo(), n)

foo in sets versus lists

    Searching for stuff in sets is smoking fast compared to searching lists.

        http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20160523/cohpy-20160523-speed-of-searching-sets-and-lists.ipynb
        https://github.com/james-prior/cohpy/blob/master/20160523/cohpy-20160523-speed-of-searching-sets-and-lists.ipynb

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

Adjourned to Brazenhead on Fifth Ave

http://www.hdrestaurants.com/brazenhead/5thavenue/

https://en.wikipedia.org/wiki/Memorial_Day_(2012_film)

wp:Polymino
wp:Polyface Farm
wp:Joel Salatin

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

asyncio uv

https://news.ycombinator.com/threads?id=akubera

From jep200404 at columbus.rr.com  Sat Jun  4 16:01:38 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sat, 4 Jun 2016 16:01:38 -0400
Subject: [CentralOH] =?utf-8?q?2016-06-03_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gYWxpY2UgZmFibGFiIHJvYm90aWNzIGNhbXBzIHBh?=
 =?utf-8?q?ttycake=3B_is_it_safe=3F=3B_lbyl_eafp_fat_iter_sentinel_tabs_sp?=
 =?utf-8?q?anning_tree_lru=5Fcache_memoization_closures_decorators_navel_s?=
 =?utf-8?q?quinting_functools_ifonly_ipython_magics_alembic_awesomecation_?=
 =?utf-8?q?learning_linguists_peppermint?=
Message-ID: <20160604160138.6098f58f.jep200404@columbus.rr.com>

Alice looks interesting.
I have no idea how good it is.
It makes me think.
wp:Alice (software)

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

Linux vs. Windows device driver model:
architecture, APIs and build environment comparison
http://hackerboards.com/open-source-microbit-sbc-now-available-for-pre-order/

Battelle fab lab here is cowtown
https://www.fablabs.io/reynoldsburgbattellefablab

Microsoft reminds us that it is still engaging in patent extortion by signing
yet another patent settlement deal which requires surrendering to Microsoft
http://techrights.org/2016/06/01/microsoft-oem-shakedown-xiaomi/

wp:FIRST Robotics Competition

North American Cities Slow to Adopt Open Source Software
http://lxer.com/module/newswire/view/230161/

Tech Core or Tech Corps
http://twenty.techcorps.org/

Secure Desktops with Qubes: Introduction
http://www.linuxjournal.com/content/secure-desktops-qubes-introduction

wp:Jamaican patty
    wp:Pasty
    wp:Salte?as
wp:Ackee
    seeds are poisonous
wp:Ackee and saltfish
wp:plaintain
wp:Coco bread
Ena's Caribbean Kitchen is authentic
http://www.enascaribbean.com/

What containers and unikernels can learn from Arduino and Raspberry Pi
https://opensource.com/business/16/5/containers-unikernels-learn-arduino-raspberry-pi

An intro to Linux commands, the EU's open source mathematics toolbox,
and more news
https://opensource.com/life/16/5/weekly-news-may-28

http://www.techradar.com/how-to/computing/everything-you-need-to-know-about-linux-commands-1321955

Google's Abacus Project: It's All about Trust
http://www.linuxjournal.com/content/googles-abacus-project-its-all-about-trust
Compare with a line from wp:Marathon Man (film).

Ubuntu Touch's Web Browser to Improve the Google Hangouts Experience in OTA-11
http://news.softpedia.com/news/ubuntu-touch-s-web-browser-to-improve-the-google-hangouts-experience-in-ota-11-504658.shtml

Samsung: Don't install Windows 10. REALLY
http://www.theregister.co.uk/2016/05/31/windows_10_samsung_fail/

Please don't use Slack for FOSS projects
https://drewdevault.com/2015/11/01/Please-stop-using-slack.html

Check out "Music to Work to" channel.

LBYL vs EAFP

What's the connection between
    an 11.8 inch length of Bell System 25 wire and
    the "The Fast and the Furious" film?

fat
?pos
crassus
livid lipids

https://mobile.twitter.com/raymondh

wp:Programming Pearls
'Quito, Ecuador'
iter( , sentinel)

study functools.partial
    why does it work with something that is not an iterable?

What's the connection between the 1985 movie Brazil and Python?

A rose by another name?
wp:K?ln
wp:Cologne

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

Mixing tabs and spaces for indentation in Python causes no end of grief.

For example, look at https://github.com/cohpy/challenge-201604-words/blob/57706ccaf571491f701600bc93b8d9dd4ae760ac/ezeeetm/lambda_function.py.
Most of function UrlFactory() is indented with spaces, which is good.
But line 24 is indented with a tab character.
On the web page above, that tab is expanded as 8 characters,
making it appear to be part of the except clause.
If so, it would never be executed since it is after the raise statement.
Is that what the author intended?
Or did the author want to print the url just before successfully returning?

Moral of the story:

    Never ever mix tabs and spaces for indentation in Python.

Better yet, don't use tab characters at all in Python source code.
Just use spaces.
If you need a tab character in a string, encode it as \t.

network switch
can hold 130k MAC addresses
but performance goes down above 80k entries

recursion
spanning tree protocol
Radia Perlman
Her network was brought down by folks who connected switches in a circle
with STP disabled.

discovered nifty decorators in functools
especially lru_cache
    default 128 entries
cache
memoization

which leads back to an old presentation that had a gentle and practical
introduction to closures and function decorators in Python.
had an epiphany about closures and decorators when shown
http://colug.net/python/cohpy/20150223/
Their head is hurting.

decorator mess with introspection

which leads back to another great presentation of Brandon's
here in cowtown a few years ago:

watching one's navel
PyOhio 2011: Squinting at Python Objects
http://pyvideo.org/video/524/pyohio-2011-squinting-at-python-objects

https://pymotw.com/3/functools/
https://docs.python.org/3/library/functools.html

What's the etymology of grep?

new python keyword:
    ifonly

blue lights when raining
ifthisthenthat

the piano has been drinking

%timeit
%load
ipython magics
http://ipython.org/ipython-doc/3/interactive/magics.html

http://watersheddistillery.com/
wp:Alembic
sqlalchemy

compare with south and djangoORM

wp:Ada Lovelace
wp:Charles Babbage
wp:Analytical Engine
wp:Grace Hopper
wp:Turing completeness

Microsoft Azure

Invent Your Own Computer Games with Python
http://inventwithpython.com/chapters/

functools wraps

obfuscation
awesomecation

How to search for a regular expression in about 50000 files?

Tom waits for no one.

unstructured learning
    Montessori school of fish
structured learning

hybrid?
    unstructured learning for most
    structured learning to fill in the gaps

How many linguists does it take to solve Peppermint?
    individually?
    together with much talking?
http://mysd300.blogspot.com/2013/07/rundown-of-puzzles-for-ipp33.html

What's the connection between Shapeways and Python?

From eric at intellovations.com  Sat Jun  4 20:34:04 2016
From: eric at intellovations.com (Eric Floehr)
Date: Sat, 4 Jun 2016 20:34:04 -0400
Subject: [CentralOH] Comedic texts in Python
Message-ID: <CAJzarMPbWo9nBYkFEhJ3+tz5kEeBT86REfbDXW9XPsqqUj462g@mail.gmail.com>

What happens when you get a comedy writer for The Onion and ClickHole to
program something in Python?

You get a hand-selected (rather than random) Markov chain generator and
hilarious resulting texts, including a play:

http://www.dailydot.com/lol/jamie-brew-predictive-text-clickhole-coding-comedy/

Excerpt: "Brew may have been newish to coding?he told me he took one course
in college, and learned Python specifically for this project?but his
predictive text emulator was real. He posted the source code, along with a
detailed explanation of how it works, on GitHub."


Code is here:

https://github.com/jbrew/pt-voicebox
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From miller.eric.t at gmail.com  Sat Jun 11 20:35:27 2016
From: miller.eric.t at gmail.com (Eric Miller)
Date: Sat, 11 Jun 2016 20:35:27 -0400
Subject: [CentralOH] plot.ly
Message-ID: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>

anybody use this with python, or have recommendations for other simple but
beautiful data visualization that is .py friendly?

tx
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From andrewkubera at gmail.com  Sat Jun 11 21:20:39 2016
From: andrewkubera at gmail.com (Andrew Kubera)
Date: Sat, 11 Jun 2016 21:20:39 -0400
Subject: [CentralOH] plot.ly
In-Reply-To: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
References: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
Message-ID: <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>

Plot.ly looks cool, but I think you need an API key to use. This was a no-go for what I want in an open, data sharing environment. I was pretty happy with Bokeh <http://bokeh.pydata.org/en/latest/>; it didn't have quite everything I needed for my physics analysis, but the integration into iPython notebooks is pretty great.

-Andrew



> On Jun 11, 2016, at 8:35 PM, Eric Miller <miller.eric.t at gmail.com> wrote:
> 
> anybody use this with python, or have recommendations for other simple but beautiful data visualization that is .py friendly?
> 
> tx
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh

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From miller.eric.t at gmail.com  Sat Jun 11 21:57:17 2016
From: miller.eric.t at gmail.com (Eric Miller)
Date: Sat, 11 Jun 2016 21:57:17 -0400
Subject: [CentralOH] plot.ly
In-Reply-To: <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>
References: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
 <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>
Message-ID: <CAN67YM5eQWvOPW-aA-NsH3LBeatdVcShBNJjzBu-=4V0B-pAfQ@mail.gmail.com>

i agree. they both look super similar, but after playing around with plot.ly
for an hour or so, I'd rather skip the api/web bit and just plot locally.

Going to try bokeh

On Sat, Jun 11, 2016 at 9:20 PM, Andrew Kubera <andrewkubera at gmail.com>
wrote:

> Plot.ly <http://plot.ly> looks cool, but I think you need an API key to
> use. This was a no-go for what I want in an open, data sharing environment.
> I was pretty happy with Bokeh <http://bokeh.pydata.org/en/latest/>; it
> didn't have *quite* everything I needed for my physics analysis, but the
> integration into iPython notebooks is pretty great.
>
> -Andrew
>
>
>
> On Jun 11, 2016, at 8:35 PM, Eric Miller <miller.eric.t at gmail.com> wrote:
>
> anybody use this with python, or have recommendations for other simple but
> beautiful data visualization that is .py friendly?
>
> tx
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From miller.eric.t at gmail.com  Sun Jun 12 09:57:41 2016
From: miller.eric.t at gmail.com (Eric Miller)
Date: Sun, 12 Jun 2016 09:57:41 -0400
Subject: [CentralOH] pyohio.org crew
Message-ID: <CAN67YM4-Z6dpV+Gvp+tD=s1owNr4NY=SWNiujwUa-Hru6ea6WA@mail.gmail.com>

If anybody on the pyohio.org team has a moment to look at the most recent
reviewer feedback comment for proposal #342, that would be greatly
appreciated.  I have all day free today to make the edits that Randy is
requesting, and will do so if I can get that proposal back in an editable
state.

Thanks!
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From miller.eric.t at gmail.com  Sun Jun 12 09:53:29 2016
From: miller.eric.t at gmail.com (Eric Miller)
Date: Sun, 12 Jun 2016 09:53:29 -0400
Subject: [CentralOH] plot.ly
In-Reply-To: <CAN67YM5eQWvOPW-aA-NsH3LBeatdVcShBNJjzBu-=4V0B-pAfQ@mail.gmail.com>
References: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
 <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>
 <CAN67YM5eQWvOPW-aA-NsH3LBeatdVcShBNJjzBu-=4V0B-pAfQ@mail.gmail.com>
Message-ID: <CAN67YM6xvf9eNPq2tWDfNLs59Xe6=GzOuu8uMaO-2tD9rmsUfw@mail.gmail.com>

going with bokeh.  Thanks Andrew.

On Sat, Jun 11, 2016 at 9:57 PM, Eric Miller <miller.eric.t at gmail.com>
wrote:

> i agree. they both look super similar, but after playing around with
> plot.ly for an hour or so, I'd rather skip the api/web bit and just plot
> locally.
>
> Going to try bokeh
>
> On Sat, Jun 11, 2016 at 9:20 PM, Andrew Kubera <andrewkubera at gmail.com>
> wrote:
>
>> Plot.ly <http://plot.ly> looks cool, but I think you need an API key to
>> use. This was a no-go for what I want in an open, data sharing environment.
>> I was pretty happy with Bokeh <http://bokeh.pydata.org/en/latest/>; it
>> didn't have *quite* everything I needed for my physics analysis, but the
>> integration into iPython notebooks is pretty great.
>>
>> -Andrew
>>
>>
>>
>> On Jun 11, 2016, at 8:35 PM, Eric Miller <miller.eric.t at gmail.com> wrote:
>>
>> anybody use this with python, or have recommendations for other simple
>> but beautiful data visualization that is .py friendly?
>>
>> tx
>> _______________________________________________
>> CentralOH mailing list
>> CentralOH at python.org
>> https://mail.python.org/mailman/listinfo/centraloh
>>
>>
>>
>> _______________________________________________
>> CentralOH mailing list
>> CentralOH at python.org
>> https://mail.python.org/mailman/listinfo/centraloh
>>
>>
>
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From godber at gmail.com  Sun Jun 12 10:49:12 2016
From: godber at gmail.com (Austin Godber)
Date: Sun, 12 Jun 2016 07:49:12 -0700
Subject: [CentralOH] plot.ly
In-Reply-To: <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>
References: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
 <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>
Message-ID: <CAMBaWcUH5WrzjM0mpQ4n-_A9qC5aiR96vWz-vrwYmdXt6cG9-w@mail.gmail.com>

Plotly actually released a fully stand alone open source version that does
not rely on their services:

https://plot.ly/javascript/open-source-announcement/

See these docs for examples of stand alone use:

https://plot.ly/javascript/open-source-announcement/

Maybe it's still not what Eric wants, but I thought someone might at least
be compelled to try it.  It looks great ... but because it started out
closed and they're still pretty mum about its open source nature I never
bothered to look at it.

- Austin


On Sat, Jun 11, 2016 at 6:20 PM, Andrew Kubera <andrewkubera at gmail.com>
wrote:

> Plot.ly <http://plot.ly> looks cool, but I think you need an API key to
> use. This was a no-go for what I want in an open, data sharing environment.
> I was pretty happy with Bokeh <http://bokeh.pydata.org/en/latest/>; it
> didn't have *quite* everything I needed for my physics analysis, but the
> integration into iPython notebooks is pretty great.
>
> -Andrew
>
>
>
> On Jun 11, 2016, at 8:35 PM, Eric Miller <miller.eric.t at gmail.com> wrote:
>
> anybody use this with python, or have recommendations for other simple but
> beautiful data visualization that is .py friendly?
>
> tx
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From james at atlantixeng.com  Sun Jun 12 19:41:00 2016
From: james at atlantixeng.com (James Bonanno)
Date: Sun, 12 Jun 2016 19:41:00 -0400
Subject: [CentralOH] Lektor
Message-ID: <575DF30C.4010905@atlantixeng.com>

I have been finding that the Python based single file CMS Lektor is 
pretty powerful, and is compelling over Nikola and Pelican. It's default 
organization is better from what I've found. I am wondering if anyone 
else has built a site with it.

https://www.getlektor.com/

Thanks, James

From miller.eric.t at gmail.com  Sun Jun 12 20:04:25 2016
From: miller.eric.t at gmail.com (Eric Miller)
Date: Sun, 12 Jun 2016 20:04:25 -0400
Subject: [CentralOH] Lektor
In-Reply-To: <575DF30C.4010905@atlantixeng.com>
References: <575DF30C.4010905@atlantixeng.com>
Message-ID: <CAN67YM5bc4Mr6KCn1VwpEr9u=a=cd7s5j=Ob11cWaEddMk5PoQ@mail.gmail.com>

I'm also curious about, specifically this in comparison to Jekyll
On Jun 12, 2016 7:48 PM, "James Bonanno" <james at atlantixeng.com> wrote:

> I have been finding that the Python based single file CMS Lektor is pretty
> powerful, and is compelling over Nikola and Pelican. It's default
> organization is better from what I've found. I am wondering if anyone else
> has built a site with it.
>
> https://www.getlektor.com/
>
> Thanks, James
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From james at atlantixeng.com  Mon Jun 13 12:18:01 2016
From: james at atlantixeng.com (James Bonanno)
Date: Mon, 13 Jun 2016 12:18:01 -0400
Subject: [CentralOH] More on Lektor
In-Reply-To: <mailman.75.1465833605.24711.centraloh@python.org>
References: <mailman.75.1465833605.24711.centraloh@python.org>
Message-ID: <575EDCB9.5030703@atlantixeng.com>

I have built a basic site with Nikola, Pelican, and Lektor, and also the 
same content applied to Flask. What I have found with Lektor is that it 
is really effective, and in my application I have a fair amount of code 
with the Pygments lexer in Markdown handles nicely, even different 
languages appearing in the same post. I really like the ability to 
custom regular site pages versus blog pages in Lektor, and the structure 
of the file setup dictates how the site will be, which I also like. It 
is interesting that Lektor has a wide following on GitHub, but imho, it 
is not quite ready for prime time yet. The reason that I say that is the 
difficulty that I had generating tags with Lektor, where there is a list 
of "officially" supported plugins and those that are "not officially 
supported", the tag/atom feeds being one of the unsupported ones. 
Pelican and Nikola are much more mature in this regard.

--James

From brian.costlow at gmail.com  Mon Jun 13 12:40:59 2016
From: brian.costlow at gmail.com (Brian Costlow)
Date: Mon, 13 Jun 2016 12:40:59 -0400
Subject: [CentralOH] Multi (Tech) Group Summer Social, June 16th.
Message-ID: <CACLJ_dHVNKem2toiycwz540UaEeraPLLKEorwrpv_Q_kG5e02A@mail.gmail.com>

The CWG, IxDA and Girl Develop It! are hosting a Summer Social Happy Hour
this Thursday. (6/16).

It's space limited. As of this post there are about 25 spots left.

RSVP here if you want to go:
http://www.meetup.com/Columbus-Web-Group/events/231680743/
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From brian.costlow at gmail.com  Mon Jun 13 16:33:13 2016
From: brian.costlow at gmail.com (Brian Costlow)
Date: Mon, 13 Jun 2016 16:33:13 -0400
Subject: [CentralOH] pyohio.org crew
In-Reply-To: <CAN67YM4-Z6dpV+Gvp+tD=s1owNr4NY=SWNiujwUa-Hru6ea6WA@mail.gmail.com>
References: <CAN67YM4-Z6dpV+Gvp+tD=s1owNr4NY=SWNiujwUa-Hru6ea6WA@mail.gmail.com>
Message-ID: <CACLJ_dHRsCdH3Ys7DSxYs1YO-6k4r_kEYMV_3usYZ9LFqOiNYw@mail.gmail.com>

Hi Eric,

We've un-cancelled the talk from the admin, you can now edit it again.

Also, if you need one of is in a hurry, emailing info at pyohio.org is your
best bet.

Thanks for all your hard work on the proposal.

--Brian

On Sun, Jun 12, 2016 at 9:57 AM, Eric Miller <miller.eric.t at gmail.com>
wrote:

> If anybody on the pyohio.org team has a moment to look at the most recent
> reviewer feedback comment for proposal #342, that would be greatly
> appreciated.  I have all day free today to make the edits that Randy is
> requesting, and will do so if I can get that proposal back in an editable
> state.
>
> Thanks!
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From jep200404 at columbus.rr.com  Mon Jun 13 18:13:30 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Mon, 13 Jun 2016 18:13:30 -0400
Subject: [CentralOH] =?utf-8?q?2016-05-27_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gb3JhY2xlIHYgZ29vZ2xlIGRlY2ltYXRpb24/IHRy?=
 =?utf-8?q?olls_least_astonishment_tuple_unpacking_CB_UNIX_hasing_set_dict?=
 =?utf-8?q?_marshmallow_challenge?=
Message-ID: <20160613181330.2d3ab95a.jep200404@columbus.rr.com>

Oracle v Google

    Google beats Oracle?Android makes ?fair use? of Java APIs
    http://arstechnica.com/tech-policy/2016/05/google-wins-trial-against-oracle-as-jury-finds-android-is-fair-use/

    $10bn Oracle v Google copyright jury verdict: Google wins, Java APIs in Android are Fair Use
    http://www.theregister.co.uk/2016/05/26/google_wins_latest_round_in_oracle_copyright_battle/

    Op-ed: Oracle attorney says Google?s court victory might kill the GPL
    http://arstechnica.com/tech-policy/2016/05/op-ed-oracle-attorney-says-googles-court-victory-might-kill-the-gpl/

    Google's Fair Use Victory Is Good for Open Source
    https://www.linkedin.com/pulse/googles-fair-use-victory-good-open-source-pamela-samuelson

Was this decimation[1] in the Roman sense?

    After suffering a painful incident, did an organization fire
    someone who did not cause the problem, so as to instill fear
    amongst the survivors, and not fire the person who caused the
    problem because the organization was too reliant on that person?

How Newegg is Winning the Battle Against Patent Trolls
https://www.linux.com/news/how-newegg-winning-battle-against-patent-trolls-video

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

Compare:

    wp:Principle of least astonishment

    Microsoft won't back down from Windows 10 nagware 'trick'
    http://www.theregister.co.uk/2016/05/26/microsoft_clarifies_upgrade_trick/

*args in tuple unpacking
*expressions

    dojo at 4519n_high:~/i/dojo$ python3
    Python 3.4.3 (default, Oct 14 2015, 20:33:09) 
    [GCC 4.8.4] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> a = list(range(5))
    >>> a
    [0, 1, 2, 3, 4]
    >>> first, *middle, last = a
    >>> first
    0
    >>> middle
    [1, 2, 3]
    >>> last
    4
    >>> 

Cowtown was important for UNIX
wp:CB UNIX
wp:Bidet
wp:Furo

http://www.merriam-webster.com/dictionary/parlous

wp:PNC Bank
wp:45 RPM Record

hashing is magic
http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20160523/cohpy-20160523-speed-of-searching-sets-and-lists.ipynb
http://pyvideo.org/video/2571/all-your-ducks-in-a-row-data-structures-in-the-s
http://pyvideo.org/video/276/the-mighty-dictionary-55
https://en.wikipedia.org/wiki/Hash_table

    most happy with: generator expression for most common words
        line 39 (and lines 39-49) of
        https://github.com/cohpy/challenge-201604-words/blob/57706ccaf571491f701600bc93b8d9dd4ae760ac/CWAndrews-OH/text_counter/word_count.py

    marshmallow challenge

    wp:Iterative design
    wp:Agile software development

[1] https://en.wikipedia.org/wiki/Decimation_(Roman_army)

From erik.n.welch at gmail.com  Tue Jun 14 13:45:42 2016
From: erik.n.welch at gmail.com (Erik Welch)
Date: Tue, 14 Jun 2016 12:45:42 -0500
Subject: [CentralOH] plot.ly
In-Reply-To: <CAMBaWcUH5WrzjM0mpQ4n-_A9qC5aiR96vWz-vrwYmdXt6cG9-w@mail.gmail.com>
References: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
 <2E372495-8755-4928-8F83-698E4754ED8B@gmail.com>
 <CAMBaWcUH5WrzjM0mpQ4n-_A9qC5aiR96vWz-vrwYmdXt6cG9-w@mail.gmail.com>
Message-ID: <CAGbNH0p7WKj7H3RepbHa4=C9aDOmcYMtE7KCeMtx=djaqNHq-w@mail.gmail.com>

+1 for Bokeh.  Seaborn is another popular choice for creating static plots.

It has a few different interfaces that make trade-offs between convenience
and customizability, which may seem overwhelming to new users.  I recommend
watching a tutorial to start learning Bokeh:

https://www.youtube.com/watch?v=Cwnb_o0UORM&index=4&list=PLGB9meziqbzr6sEJ6lScTBMGYTWUGS-e_

If you want to learn more about colormaps and matplotlib's new default,
viridis, watch the video here:

http://matplotlib.org/style_changes.html

Full disclosure: I work for Continuum Analytics, which supports the primary
developers behind Bokeh.

Cheers,
Erik

On Sun, Jun 12, 2016 at 9:49 AM, Austin Godber <godber at gmail.com> wrote:

> Plotly actually released a fully stand alone open source version that does
> not rely on their services:
>
> https://plot.ly/javascript/open-source-announcement/
>
> See these docs for examples of stand alone use:
>
> https://plot.ly/javascript/open-source-announcement/
>
> Maybe it's still not what Eric wants, but I thought someone might at least
> be compelled to try it.  It looks great ... but because it started out
> closed and they're still pretty mum about its open source nature I never
> bothered to look at it.
>
> - Austin
>
>
> On Sat, Jun 11, 2016 at 6:20 PM, Andrew Kubera <andrewkubera at gmail.com>
> wrote:
>
>> Plot.ly <http://plot.ly> looks cool, but I think you need an API key to
>> use. This was a no-go for what I want in an open, data sharing environment.
>> I was pretty happy with Bokeh <http://bokeh.pydata.org/en/latest/>; it
>> didn't have *quite* everything I needed for my physics analysis, but the
>> integration into iPython notebooks is pretty great.
>>
>> -Andrew
>>
>>
>>
>> On Jun 11, 2016, at 8:35 PM, Eric Miller <miller.eric.t at gmail.com> wrote:
>>
>> anybody use this with python, or have recommendations for other simple
>> but beautiful data visualization that is .py friendly?
>>
>> tx
>> _______________________________________________
>> CentralOH mailing list
>> CentralOH at python.org
>> https://mail.python.org/mailman/listinfo/centraloh
>>
>>
>>
>> _______________________________________________
>> CentralOH mailing list
>> CentralOH at python.org
>> https://mail.python.org/mailman/listinfo/centraloh
>>
>>
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From pybokeh at gmail.com  Tue Jun 14 14:16:14 2016
From: pybokeh at gmail.com (pybokeh)
Date: Tue, 14 Jun 2016 14:16:14 -0400
Subject: [CentralOH] plot.ly
In-Reply-To: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
References: <CAN67YM5EWjCiO7n7pMVwYrO9AgKMMumdT-qwVVC0yUmg4zkmKA@mail.gmail.com>
Message-ID: <CAOoMBVjOmKFrajNtRR2BXhjmn5ahky+dLdLTUaAfBmAe+6cHnA@mail.gmail.com>

For javascript based plotting library, I went with plotly instead of bokeh
because it has more chart types and the tool tips are active right out of
the box.  With bokeh, it is more work to get tool tip working.  Maybe that
has changed recently?

Choropleth map in plotly is way more polished than bokeh's choropleth map.

>From what I understand, Bokeh is better for plotting large data sets than
plotly.

For pure python, seaborn is awesome.
On Jun 11, 2016 8:35 PM, "Eric Miller" <miller.eric.t at gmail.com> wrote:

> anybody use this with python, or have recommendations for other simple but
> beautiful data visualization that is .py friendly?
>
> tx
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From brian.costlow at gmail.com  Wed Jun 15 15:26:53 2016
From: brian.costlow at gmail.com (Brian Costlow)
Date: Wed, 15 Jun 2016 15:26:53 -0400
Subject: [CentralOH] 
	=?utf-8?q?2016-05-27_=E9=81=93=E5=A0=B4_Scribbles_?=
	=?utf-8?b?76SY5pu4L+aDoeaWhz8gb3JhY2xlIHYgZ29vZ2xlIGRlY2ltYXRpb24/?=
	=?utf-8?q?_trolls_least_astonishment_tuple_unpacking_CB_UNIX_hasin?=
	=?utf-8?q?g_set_dict_marshmallow_challenge?=
In-Reply-To: <20160613181330.2d3ab95a.jep200404@columbus.rr.com>
References: <20160613181330.2d3ab95a.jep200404@columbus.rr.com>
Message-ID: <CACLJ_dGRVFHn5pJc+C6Ls3vkDxo4ZQ=CdaKW4aMR4Sdmu1hsVA@mail.gmail.com>

The last 20 minutes of this PyCon 2016 talk are Van Lindberg of the PSF
(who is also Associate General Counsel at Rackspace) talking about legal
implications of the Oracle v. Google case.

https://www.youtube.com/watch?v=Bo1UqxTnp1s&feature=youtu.be

On Mon, Jun 13, 2016 at 6:13 PM, <jep200404 at columbus.rr.com> wrote:

> Oracle v Google
>
>     Google beats Oracle?Android makes ?fair use? of Java APIs
>
> http://arstechnica.com/tech-policy/2016/05/google-wins-trial-against-oracle-as-jury-finds-android-is-fair-use/
>
>     $10bn Oracle v Google copyright jury verdict: Google wins, Java APIs
> in Android are Fair Use
>
> http://www.theregister.co.uk/2016/05/26/google_wins_latest_round_in_oracle_copyright_battle/
>
>     Op-ed: Oracle attorney says Google?s court victory might kill the GPL
>
> http://arstechnica.com/tech-policy/2016/05/op-ed-oracle-attorney-says-googles-court-victory-might-kill-the-gpl/
>
>     Google's Fair Use Victory Is Good for Open Source
>
> https://www.linkedin.com/pulse/googles-fair-use-victory-good-open-source-pamela-samuelson
>
> Was this decimation[1] in the Roman sense?
>
>     After suffering a painful incident, did an organization fire
>     someone who did not cause the problem, so as to instill fear
>     amongst the survivors, and not fire the person who caused the
>     problem because the organization was too reliant on that person?
>
> How Newegg is Winning the Battle Against Patent Trolls
>
> https://www.linux.com/news/how-newegg-winning-battle-against-patent-trolls-video
>
> wp: prefix means Wikipedia
> To get good answers, consider following the advice in the links below.
> http://catb.org/~esr/faqs/smart-questions.html
>
> http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html
>
> Compare:
>
>     wp:Principle of least astonishment
>
>     Microsoft won't back down from Windows 10 nagware 'trick'
>
> http://www.theregister.co.uk/2016/05/26/microsoft_clarifies_upgrade_trick/
>
> *args in tuple unpacking
> *expressions
>
>     dojo at 4519n_high:~/i/dojo$ python3
>     Python 3.4.3 (default, Oct 14 2015, 20:33:09)
>     [GCC 4.8.4] on linux
>     Type "help", "copyright", "credits" or "license" for more information.
>     >>> a = list(range(5))
>     >>> a
>     [0, 1, 2, 3, 4]
>     >>> first, *middle, last = a
>     >>> first
>     0
>     >>> middle
>     [1, 2, 3]
>     >>> last
>     4
>     >>>
>
> Cowtown was important for UNIX
> wp:CB UNIX
> wp:Bidet
> wp:Furo
>
> http://www.merriam-webster.com/dictionary/parlous
>
> wp:PNC Bank
> wp:45 RPM Record
>
> hashing is magic
>
> http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20160523/cohpy-20160523-speed-of-searching-sets-and-lists.ipynb
>
> http://pyvideo.org/video/2571/all-your-ducks-in-a-row-data-structures-in-the-s
> http://pyvideo.org/video/276/the-mighty-dictionary-55
> https://en.wikipedia.org/wiki/Hash_table
>
>     most happy with: generator expression for most common words
>         line 39 (and lines 39-49) of
>
> https://github.com/cohpy/challenge-201604-words/blob/57706ccaf571491f701600bc93b8d9dd4ae760ac/CWAndrews-OH/text_counter/word_count.py
>
>     marshmallow challenge
>
>     wp:Iterative design
>     wp:Agile software development
>
> [1] https://en.wikipedia.org/wiki/Decimation_(Roman_army)
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From jep200404 at columbus.rr.com  Wed Jun 15 21:15:00 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Wed, 15 Jun 2016 21:15:00 -0400
Subject: [CentralOH] =?utf-8?q?2016-04-25_=E6=9C=83=E8=AD=B0_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gdGVtcGVyYXR1cmUgY2hhbGxlbmdlIHJldmlldyBk?=
 =?utf-8?q?octests_magic_number_thify_pretty_d3_mondays_list_date_parsing_?=
 =?utf-8?q?formatting_tuple_unpacking_Nulluary_word_counting_mcilroy_knuth?=
 =?utf-8?q?_negative_code_djgpp_nextstep_micro=3Abit_pyboard_micropython_d?=
 =?utf-8?q?nf_pi0_i18n_leapyear?=
Message-ID: <20160615211500.35936446.jep200404@columbus.rr.com>

Thanks to Pillar and Chris for their generous hospitality.

pack

    HP hoodie to give away
    HP cooler to give away

presentations

    refactor something

    ask people what music they code to

electrons have spin.
wp:Electron magnetic moment
wp:Atomic orbital

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

Pillar 
    Julie Walker
    talent engagement
        Plugged In
        always looking for polyglot developers
        extreme programming
        test driving
        pair programming
        continuous integration

    hire for life

    apprentice
    journeyman
    craftsman

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

PyOhio is last weekend of July: 30 & 31
deadline for proposals is May 15th

good talks
good people
free

Brian Costlow is head of PyOhio this year

one-day bootcamp for kids
40% for economically disadvantaged youths
community 
    run the race
    west side

looking for sponsors
great way to get your name out

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

ejf leading review of this month's entries

https://github.com/cohpy/challenge-201603-temps
reviewed answer4

    ran on try.jupyter.org
        dependencies only
    named magic number
    almost on the edge of tdd, but not quite
    
    locale issues
        might go back to numbers

review answer1
    python-dateutil

    csv: but it wants file, but did not want to mess with wierd stringio

    doctests
    thify()
    datetime.*.dateformat
    114: doesn't like concatenation (or the way the concatenation was done???)
        print(date.strftime('%B ' + thify(date.day) + ', %Y'))

        print(date.strftime(''.join(['%B ', thify(date.day), ', %Y'])))
        print(date.strftime('%%B %s, %%Y' % thify(date.day))
        print(date.strftime(
            '%%B {dayname}, %%Y'.format(dayname=thify(date.day))))

answer2

    https://github.com/janmilosh/cohpy_temps
    pretty graph!!! by d3 stuff
    hid wxunderground key (not in repo!!!)
    predicts 83F
    mondays = self._mondays_in_month(year, month)
        similar technique to answer4 using list of mondays

            date_list = formatted_date.split('-')
            year = date_list[2]
            month = date_list[0]
            day = date_list[1]

            month, day, year = formatted_date.split('-')

            import datetime
            date = datetime.datetime.strptime(formatted_date, '%m-%d-%Y')
            date.strftime('%Y%m%d')

answer1

    nice:
        naming datetime(2009, 9, 28)
        thify: nice to take that much care
            inflect
                uses serial comma
        date.strftime
        for date in dates: easy on the eyes
        '{d.year}-{d.month}-{d.day}'.format(d=date)
            very readable!!!
        date.strftime('%Y-%m-%d')
        delta for days and months

answer3

    nice:
        copying challenge into markdown cell
        not large, gets to the point

    study http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160429/dojo-20160429-2016-Mar-COhPy_Challenge_Rough-20160513-1144.ipynb

answer4

    nice:
        works on try.jupyter.org
        FIRST_MEETING
        code was short and to the point
        mostly readable
        mondays, get_dates_for_weekday()
            return mondays[-2]

    meh:
        should have used tuple unpacking in:
            [
            x[0]
            for x in c.itermonthdays2(year, month)
            if x[0] and x[1] == weekday] 
        to have been something like:
            [
            day_of_month
            for day_of_month, day_of_week in c.itermonthdays2(year, month)
            if day_of_month and day_of_week == weekday]
        if earliest_date <= date < too_late_date:
            too_late_date is awkward name
            need to rework this
            close to being good, but not there yet
        12 in for month in range(1, 12 + 1):
            should name that magic number
                MONTHS_PER_YEAR = 12
        internationalization

answer5

        'Nulluary'
            cute name
        first time I have ever seen leap year calculation like this:
            if year%4: return False
            if year%100: return True
            if year%400: return False
            return True

answer6

    nice:
        LAST_MONDAY_OF_MONTH = relativedelta(day=31, weekday=MO(-1))
        split() in months = "Jan Feb ... Nov Dec".split()
        pretty plots!!!

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

new challenge
10 most common words (and their counts) of Mary Shelley's Frankenstein

https://github.com/cohpy/challenge-201604-words

Doug McIlroy did this with six short lines.

    http://www.leancrew.com/all-this/2011/12/more-shell-less-egg/
    https://github.com/pdonis/wordcount

"The real hero of programming is the one who writes negative code,"

negative code

    When a change in a program source makes the amount of lines of code
    decrease ('negative' code), while its overall quality, readability
    or speed improves

###############################################################################

Javascript is not really a bad language, it's just written that way.

-- Jessica Rabbit

###############################################################################

ejf

what is python?

    specification
        grammar.html
        explanation

cpython
jython
ironpython.net/try
pypy
    wp:Ouroboros
rpython
    statically compiled
brython
    browser python (instead of javascript)
pypy.js
    emscripten compiles to asm.js
micropython.org
    make python into an OS
    micropython board similar power to Pentium PC
Damien George
micro:bit
microbit.co.uk

pyboard was made for micropython
eric was using pyboard
microbit is different board for different purpose
    see colug.net/carpe for continuing coverage

alternative implementations of python

    micropython

sudo dnf install screen

    (yes, dnf is a package installer)
    https://fedoraproject.org/wiki/Features/DNF

forgot to pack pi0

    but later found they _were_ packed

nextstep was so far ahead of everybody else for development platform
visual c++ was misleading misnomer that left a very bad taste in my mouth

friends don't let friends use inittest
pytest rocks

python for (PC)DOS
    https://www.python.org/download/other/
    http://www.caddit.net/pythond
    DJGPP is good
    thank you DJ!

###############################################################################

    mud @ compuserve
    logged in multiple times while on compuserve premises
    ratcheted up to wizard
    bug report, may I please keep my wizard priviledges.

muons and bogons

From jep200404 at columbus.rr.com  Sun Jun 19 11:27:23 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sun, 19 Jun 2016 11:27:23 -0400
Subject: [CentralOH] =?utf-8?q?2016-06-10_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gbG9nZ2luZyBvZWlzLmNvbSBQaOG7nyB3ZSBhbHNv?=
 =?utf-8?q?_walk_dogs_Beautiful=2C_Idiomatic_Python_and_other_videos_malwa?=
 =?utf-8?q?re_subclassing_abd_bisect_pandas_tk_flask_growler?=
Message-ID: <20160619112723.2d239620.jep200404@columbus.rr.com>

How to enable and use logging module in Python
http://ask.xmodulo.com/logging-module-python.html

oeis.com

wp:Ph?
    6-1-Pho
    Buckeye Pho
    Absolutely Phobulous
    What the Ph?
    Ph?-Nomenal
    Pho Show
    Pho Real
    Simply Pho You
    unPh?gettable
    Ph?-natic
    Good Pho You

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

Tommy Boy
Heinlein
    We Also Walk Dogs
        The Green Hills of Earth
        The Pass Through Tomorrow
Sixth Column?

absolute time
Kelvin Time

good:
Transforming Code into Beautiful, Idiomatic Python
http://pyvideo.org/video/1780/transforming-code-into-beautiful-idiomatic-pytho

wp:Coherence (film)

master key
youtube video HbQauX2LOFl

Swiss Voters Reject Proposal for Guaranteed Monthly Income
http://english.chosun.com/site/data/html_dir/2016/06/06/2016060600648.html

Elenco
Elenchus
Socrates

have I watched this?
Python Tips, Tricks, and Idioms
http://pyvideo.org/video/1108/python-tips-tricks-and-idioms

How Windows 10 became malware
http://www.computerworld.com/article/3080102/operating-systems/how-windows-10-became-malware.html

My how things change, but they don't change. Compare:

    Ballmer: ?Linux is a cancer?
    http://www.theregister.co.uk/2001/06/02/ballmer_linux_is_a_cancer/

    Microsoft has created its own FreeBSD. Repeat. Microsoft has created its own FreeBSD
    http://www.theregister.co.uk/2016/06/09/microsoft_freebsd/
    Gotta keep all of ones ducks in a line, even if they are Azure.

probably should watch
The Art of Subclassing
http://pyvideo.org/video/879/the-art-of-subclassing

bisect ? Array bisection algorithm
https://docs.python.org/3/library/bisect.html

abd all but dissertation

mega schema builder using pandas using tk
wants flask

https://github.com/pyGrowler/Growler
https://github.com/akubera

abc.xyz
wp:Great Firewall of China
great firewall of osu

From eric at intellovations.com  Sun Jun 19 11:53:49 2016
From: eric at intellovations.com (Eric Floehr)
Date: Sun, 19 Jun 2016 11:53:49 -0400
Subject: [CentralOH] Async buffer generation
Message-ID: <CAJzarMNeQe29gtA7aD5TsaWFSCofySmZPjeomiRqNoh+k95JTA@mail.gmail.com>

I am using pyaudio to generate real-time audio. Pyaudio allows you to pass
in a callback function so that it can request some amount of audio bytes to
play.

Here is an example of a callback function that generates random noise:

def generate_samples(in_data, frame_count, time_info, status_flags):
    out_data = b""
    for _ in range(frame_count):
        out_data += pack('h', int((round(random.random() * VOLRANGE) +
MINVOL)))
    return out_data, pyaudio.paContinue

The only thing I care about is "frame_count" which is the requested number
of audio bytes to return.

The generation/creation of those audio bytes is occurring synchronously in
the callback however. What I'd really like to do is generate the audio
bytes asynchronously and then just have the callback just drain however
much of the buffer is requested.

I've been going through Python asyncio tutorials but haven't groked this
use-case (most of the tutorials are network/HTTP/etc. based and I know its
the same concept but it's different enough that I haven't been able to
latch on to how to do it in my case).

Any thoughts on how I could do this with Python 3.5's ayncio?

Thanks!
Eric
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From nludban at columbus.rr.com  Sun Jun 19 12:38:38 2016
From: nludban at columbus.rr.com (Neil Ludban)
Date: Sun, 19 Jun 2016 12:38:38 -0400
Subject: [CentralOH] Async buffer generation
In-Reply-To: <CAJzarMNeQe29gtA7aD5TsaWFSCofySmZPjeomiRqNoh+k95JTA@mail.gmail.com>
References: <CAJzarMNeQe29gtA7aD5TsaWFSCofySmZPjeomiRqNoh+k95JTA@mail.gmail.com>
Message-ID: <20160619123838.e607c7884c723ceaffc12f8b@columbus.rr.com>

On Sun, 19 Jun 2016 11:53:49 -0400
Eric Floehr <eric at intellovations.com> wrote:
> I am using pyaudio to generate real-time audio. Pyaudio allows you to pass
> in a callback function so that it can request some amount of audio bytes to
> play.
> 
> Here is an example of a callback function that generates random noise:
> 
> def generate_samples(in_data, frame_count, time_info, status_flags):
>     out_data = b""
>     for _ in range(frame_count):
>         out_data += pack('h', int((round(random.random() * VOLRANGE) +
> MINVOL)))
>     return out_data, pyaudio.paContinue
> 
> The only thing I care about is "frame_count" which is the requested number
> of audio bytes to return.
> 
> The generation/creation of those audio bytes is occurring synchronously in
> the callback however. What I'd really like to do is generate the audio
> bytes asynchronously and then just have the callback just drain however
> much of the buffer is requested.
> 
> I've been going through Python asyncio tutorials but haven't groked this
> use-case (most of the tutorials are network/HTTP/etc. based and I know its
> the same concept but it's different enough that I haven't been able to
> latch on to how to do it in my case).
> 
> Any thoughts on how I could do this with Python 3.5's ayncio?
> 
> Thanks!
> Eric

https://docs.python.org/3/library/asyncio-queue.html

The constructor accepts a maxsize argument, the put and get methods
are awaitable and block when the queue is full/empty.

I thought I once saw thread safe synchronization docs, but can't
find it now.  My best suggestion at the moment is for the audio
callback to schedule a task with call_soon_threadsafe, then sleep
on a condition.  The task pulls one item from the asyncio queue,
puts it somewhere for the callback thread, then notifies the condition.
If it's not already obvious that this a bad way to mix i/o tasks with
cpu tasks, it will be a good learning experience...

From nludban at columbus.rr.com  Sun Jun 19 12:44:03 2016
From: nludban at columbus.rr.com (Neil Ludban)
Date: Sun, 19 Jun 2016 12:44:03 -0400
Subject: [CentralOH] Async buffer generation
In-Reply-To: <20160619123838.e607c7884c723ceaffc12f8b@columbus.rr.com>
References: <CAJzarMNeQe29gtA7aD5TsaWFSCofySmZPjeomiRqNoh+k95JTA@mail.gmail.com>
 <20160619123838.e607c7884c723ceaffc12f8b@columbus.rr.com>
Message-ID: <20160619124403.5ce06c9b63d45e62e5c1cced@columbus.rr.com>

On Sun, 19 Jun 2016 12:38:38 -0400
Neil Ludban <nludban at columbus.rr.com> wrote:
> On Sun, 19 Jun 2016 11:53:49 -0400
> Eric Floehr <eric at intellovations.com> wrote:
> > I am using pyaudio to generate real-time audio. Pyaudio allows you to pass
> > in a callback function so that it can request some amount of audio bytes to
> > play.
> > 
> > Here is an example of a callback function that generates random noise:
> > 
> > def generate_samples(in_data, frame_count, time_info, status_flags):
> >     out_data = b""
> >     for _ in range(frame_count):
> >         out_data += pack('h', int((round(random.random() * VOLRANGE) +
> > MINVOL)))
> >     return out_data, pyaudio.paContinue
> > 
> > The only thing I care about is "frame_count" which is the requested number
> > of audio bytes to return.
> > 
> > The generation/creation of those audio bytes is occurring synchronously in
> > the callback however. What I'd really like to do is generate the audio
> > bytes asynchronously and then just have the callback just drain however
> > much of the buffer is requested.
> > 
> > I've been going through Python asyncio tutorials but haven't groked this
> > use-case (most of the tutorials are network/HTTP/etc. based and I know its
> > the same concept but it's different enough that I haven't been able to
> > latch on to how to do it in my case).
> > 
> > Any thoughts on how I could do this with Python 3.5's ayncio?
> > 
> > Thanks!
> > Eric
> 
> https://docs.python.org/3/library/asyncio-queue.html
> 
> The constructor accepts a maxsize argument, the put and get methods
> are awaitable and block when the queue is full/empty.
> 
> I thought I once saw thread safe synchronization docs, but can't
> find it now.  My best suggestion at the moment is for the audio
> callback to schedule a task with call_soon_threadsafe, then sleep
> on a condition.  The task pulls one item from the asyncio queue,
> puts it somewhere for the callback thread, then notifies the condition.
> If it's not already obvious that this a bad way to mix i/o tasks with
> cpu tasks, it will be a good learning experience...


Hidden on the last web page:

https://docs.python.org/3/library/asyncio-dev.html#concurrency-and-multithreading

Replace what I said earlier with run_couroutine_threadsafe and
future.result().

From andrewkubera at gmail.com  Sun Jun 19 13:55:56 2016
From: andrewkubera at gmail.com (Andrew Kubera)
Date: Sun, 19 Jun 2016 13:55:56 -0400
Subject: [CentralOH] Async buffer generation
In-Reply-To: <CAJzarMNeQe29gtA7aD5TsaWFSCofySmZPjeomiRqNoh+k95JTA@mail.gmail.com>
References: <CAJzarMNeQe29gtA7aD5TsaWFSCofySmZPjeomiRqNoh+k95JTA@mail.gmail.com>
Message-ID: <4EBEDF71-73AB-4C48-9C72-AD36E956C431@gmail.com>

Asyncio is really only helpful if there are a lot of io-bound operations you have to worry about (hence the networking tutorials), and you'll have to pass complete control to the event loop (once in a coroutine, always in a coroutine). The best bet would probably be to create a coroutine using an Executor <https://docs.python.org/3/library/asyncio-eventloop.html?highlight=asyncio%20executor#executor>, which will manage all behind-the-scenes thread stuff. Look there if you really want asyncio.

With respect to your noise function, which I'm sure is just an illustration but I thought I'd comment anyways, it might be effective to use a generator, which you can "send" your size request.

def get_noise(buff_size=1000):
    intrange = (MINVOL, MINVOL + VOLRANGE)
    buffer = [random.randint(*intrange) for _ in range(buff_size)]
    req_len = yield
    while True:
        if req_len > len(buffer):
	    gen_count = req_len - len(buffer) + buff_size
            buffer += [random.randint(*intrange) for _ in range(gen_count)]
        result, buffer = buffer[:req_len], buffer[req_len:]
	req_len = yield bytes(result)


>>> noise_gen = get_noise()
>>> next(noise_gen)
>>> data_500bytes = noise_gen.send(500)
>>> sound_20bytes = noise_gen.send(20)

(Or with numpy)

def get_noise_np(buff_size=1000):
    intrange = (MINVOL, MINVOL + VOLRANGE)
    buffer = np.random.random_integers(*intrange, buff_size)
    req_len = yield
    while True:
        if req_len > len(buffer):
	    gen_count = req_len - len(buffer) + buff_size
	    buffer += np.random.random_integers(*intrange, gen_count)
        result, buffer = buffer[:req_len], buffer[req_len:]
	req_len = yield bytes(result)

(all code untested)

You could choose a sufficiently large buff_size such that every noise.send(...) just chips away at the already created list. From there you could have a 'low water mark', so if the buffer size falls below it, a thread is spun up to generate more numbers in the meantime; I'm not going to try to write that out.

Good Luck! And please keep us updated on how it works.



> On Jun 19, 2016, at 11:53 AM, Eric Floehr <eric at intellovations.com> wrote:
> 
> I am using pyaudio to generate real-time audio. Pyaudio allows you to pass in a callback function so that it can request some amount of audio bytes to play.
> 
> Here is an example of a callback function that generates random noise:
> 
> def generate_samples(in_data, frame_count, time_info, status_flags):
>     out_data = b""
>     for _ in range(frame_count):
>         out_data += pack('h', int((round(random.random() * VOLRANGE) + MINVOL)))
>     return out_data, pyaudio.paContinue
> 
> The only thing I care about is "frame_count" which is the requested number of audio bytes to return.
> 
> The generation/creation of those audio bytes is occurring synchronously in the callback however. What I'd really like to do is generate the audio bytes asynchronously and then just have the callback just drain however much of the buffer is requested.
> 
> I've been going through Python asyncio tutorials but haven't groked this use-case (most of the tutorials are network/HTTP/etc. based and I know its the same concept but it's different enough that I haven't been able to latch on to how to do it in my case).
> 
> Any thoughts on how I could do this with Python 3.5's ayncio?
> 
> Thanks!
> Eric
> 
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh

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From eric at intellovations.com  Wed Jun 22 16:53:14 2016
From: eric at intellovations.com (Eric Floehr)
Date: Wed, 22 Jun 2016 16:53:14 -0400
Subject: [CentralOH] Async buffer generation update
Message-ID: <CAJzarMMaqffoUfdoM-AeT_Gb0sgjHYqzudsB74ytRYUOynPpwg@mail.gmail.com>

Thank you Neil and Andrew for getting me pointed in the right direction.
Here is where I am now.

I've taken Neil's suggestion of a Queue, and am using the multiprocessing
module's Queue which is thread-safe, and am using that as the audio buffer.
I then use multiprocessing's Process class to throw the generation process
into a separate process, like so:


import multiprocessing

audio_bytes = multiprocessing.Queue(maxsize=int(RATE/4.0))

def generate_samples():
    while True:
        audio_bytes.put((round(random.random() * VOLRANGE) + MINVOL))

def get_samples(in_data, frame_count, time_info, status_flags):
    out_data = b""
    for _ in range(frame_count):
        out_data += pack('h', audio_bytes.get())
    return out_data, pyaudio.paContinue

def main():
    sound_process = multiprocessing.Process(target=generate_samples)
    sound_process.start()


Currently, I'm using a buffer size of a quarter of a second. I'm still not
using a generator to create the samples, but I'm working towards that. I
wanted to get the basics down first.

I also thought that I could use asyncio's ensure_future() to accomplish
effectively the same thing effectively, except asyncio is just concurrent,
whereas multiprocessing is parallel (I believe?).

-Eric
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From jep200404 at columbus.rr.com  Wed Jun 22 17:32:25 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Wed, 22 Jun 2016 17:32:25 -0400
Subject: [CentralOH] =?utf-8?q?2016-06-17_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gYmlvbmljcyBnaXRodWIga2lkcyBmbG93IG1jcmli?=
 =?utf-8?q?_pigness_of_pigs_ray_rays_hog_pit_james_anderson_flask_werkzeug?=
 =?utf-8?q?_salad_bdd_=22This_Land=22?=
Message-ID: <20160622173225.61bc4258.jep200404@columbus.rr.com>

Open Source Bionics Promise: Affordably Make Lives Better
http://fossforce.com/2016/06/open-source-bionics/

10 tips for new GitHub projects
https://opensource.com/business/16/6/10-tips-new-github-projects

The Python Kids Club
http://fossforce.com/2016/06/python-kids-club/

You'll know it when you are in it.
Flow is a mental state of intense focus for programming
https://opensource.com/life/16/6/interview-lindsey-bieda
Hardware Hula Hoops and Flow
http://opensourcebridge.org/sessions/1737

The McRib Availability Prediction Engine
https://github.com/ColumbusCodeClub/mcribadamus
The Marvelous Pigness of Pigs: Nurturing and Caring for All God's Creation.
http://polyfaceyum.com/shop/index.php?main_page=product_info&cPath=2&products_id=198&zenid=2q68415db3ffoblgacbi1li7b6
pigaerating
http://www.rayrayshogpit.com/
http://andersonfarmsohio.com/

daily wtf
    thedailywtf.com
    http://thedailywtf.com/articles/OMGWTF-Finalist-01-The-Buggy-4Function-Calculator

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

wp:Flask (web framework)
It came out of an April Fool's joke but proved popular enough to make into a
serious application in its own right.
Werkzeug The Python WSGI Utility Library
http://werkzeug.pocoo.org/

Thanks to Pillar for usually having salad at Python monthly meetings.
    lettuce bdd
    cucumber bdd written in Ruby
    gherkin bdd

Lawyers who yanked ?Happy Birthday? into public domain now sue over ?This Land?
http://arstechnica.com/tech-policy/2016/06/lawyers-who-yanked-happy-birthday-into-public-domain-now-sue-over-this-land/

Beijing Regulators Block Sales Of iPhones,
Claiming The Design Is Too Close To Chinese Company's Phone
https://www.techdirt.com/articles/20160617/07255534731/beijing-regulators-block-sales-iphones-claiming-design-is-too-close-to-chinese-companys-phone.shtml?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed

    But, once again, just as we've been saying for years, the
    Chinese, unlike many in the West, absolutely recognize what
    patents are: a trade barrier, and they must love the fact that
    the US keeps asking them to build more trade barriers.


From brian.costlow at gmail.com  Wed Jun 22 18:09:45 2016
From: brian.costlow at gmail.com (Brian Costlow)
Date: Wed, 22 Jun 2016 18:09:45 -0400
Subject: [CentralOH] Async buffer generation update
In-Reply-To: <CAJzarMMaqffoUfdoM-AeT_Gb0sgjHYqzudsB74ytRYUOynPpwg@mail.gmail.com>
References: <CAJzarMMaqffoUfdoM-AeT_Gb0sgjHYqzudsB74ytRYUOynPpwg@mail.gmail.com>
Message-ID: <CACLJ_dGKq-RwZmXCs6VdxoMrTKpQWtuEm5sSFYwNNQz0jqNOTQ@mail.gmail.com>

Yes, more or less. The event loop runs in one thread and the concurrency is
provided by coroutine based "green threads".

If you look at the link Andrew provided for Executor,
https://docs.python.org/3/library/asyncio-eventloop.html?highlight=asyncio%20executor#executor

The default is to execute the coro in a separate thread in a threadpool,
but in theory if you replaced the default executor with a process executor,
like:

https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.ProcessPoolExecutor

That would move cpu bound coroutines to a different process and be parallel.

At that point, you are doing Celery without a broker. I'll leave it up to
you whether that would be a good thing or a bad thing for your use case ;-)



On Wed, Jun 22, 2016 at 4:53 PM, Eric Floehr <eric at intellovations.com>
wrote:

> Thank you Neil and Andrew for getting me pointed in the right direction.
> Here is where I am now.
>
> I've taken Neil's suggestion of a Queue, and am using the multiprocessing
> module's Queue which is thread-safe, and am using that as the audio buffer.
> I then use multiprocessing's Process class to throw the generation process
> into a separate process, like so:
>
>
> import multiprocessing
>
> audio_bytes = multiprocessing.Queue(maxsize=int(RATE/4.0))
>
> def generate_samples():
>     while True:
>         audio_bytes.put((round(random.random() * VOLRANGE) + MINVOL))
>
> def get_samples(in_data, frame_count, time_info, status_flags):
>     out_data = b""
>     for _ in range(frame_count):
>         out_data += pack('h', audio_bytes.get())
>     return out_data, pyaudio.paContinue
>
> def main():
>     sound_process = multiprocessing.Process(target=generate_samples)
>     sound_process.start()
>
>
> Currently, I'm using a buffer size of a quarter of a second. I'm still not
> using a generator to create the samples, but I'm working towards that. I
> wanted to get the basics down first.
>
> I also thought that I could use asyncio's ensure_future() to accomplish
> effectively the same thing effectively, except asyncio is just concurrent,
> whereas multiprocessing is parallel (I believe?).
>
> -Eric
>
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From eric at intellovations.com  Thu Jun 23 20:48:34 2016
From: eric at intellovations.com (Eric Floehr)
Date: Thu, 23 Jun 2016 20:48:34 -0400
Subject: [CentralOH] Monthly meeting this Monday (and code exercise)
Message-ID: <CAJzarMNRoktuucD4RpM1pS2d074BfnMdDeOsRJpg9Lumrt1=ig@mail.gmail.com>

All,

Our June monthly meeting is this coming Monday at Pillar. Please RSVP here:

http://www.meetup.com/Central-Ohio-Python-Users-Group/events/228901501/


Also don't forget about the code exercise, dealing with generators, which
can be found here:

https://github.com/cohpy/challenge-201605-generators

Prizes there will be.

See you there!
Eric
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From jep200404 at columbus.rr.com  Fri Jun 24 20:08:30 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Fri, 24 Jun 2016 20:08:30 -0400
Subject: [CentralOH] 2016-03-02 Tadka Napkin Scribbles: Ultraviolet
 semiconductors solar stuff
Message-ID: <20160624200830.76acefa0.jep200404@columbus.rr.com>

Ultraviolet light damages all semiconductors.

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

wp:Solar maximum
wp:Solar cycle
wp:Solar irradiance

From jep200404 at columbus.rr.com  Sun Jun 26 14:13:28 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sun, 26 Jun 2016 14:13:28 -0400
Subject: [CentralOH] =?utf-8?q?2016-05-23_=E6=9C=83=E8=AD=B0_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz86IGJyYW5kb24gcmhvZGVzIHRpbWUgc2F2ZXJzIGN1?=
 =?utf-8?q?t_paste_pyflakes_jedi_mark_aufdencamp_stomp_websocket_mvc_dead_?=
 =?utf-8?q?web_3=2E0_push_activemq_enterprise_integration_patterns_hohpe_w?=
 =?utf-8?q?oolf_cors_waze_moovit_crash_sqs?=
Message-ID: <20160626141328.2622f7bf.jep200404@columbus.rr.com>

Brandon Rhodes gave good presentation on using pyflakes and jedi in an editor.

two things your editor should be able to do

little things that waste time
    not having cut and paste

pyflakes
    analyzes Python source code for errors
        catches syntax errors
        catches uninitialized variables
    uses from emacs
jedi
    jumps to other pieces of code

A lot of the 1990s and very early 2000s
was essentially the Python community learning
that even though Python is dynamic,
you should still write as though you're in
an old fashioned static language,
where you actually have to define the things that you use. 
That's why I use pyflakes.

pyflakes catches my typing errors as I am typing.

jedi 
    moves cursor from where something is used to where it is defined
    (which may be in a different file)

It is amazing how many new habits
I have had to learn in the last seven months.
Because I am dealing with way more code
than I ever had in one project before.

Guido is a few desks over these days.

He uses ^. for "jump in" and ^, for "jump out".

https://pypi.python.org/pypi/pyflakes
https://github.com/pyflakes/pyflakes/
http://www.vim.org/scripts/script.php?script%5Fid=2441

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

Mark Aufdencamp gave a presentation on asynchronous I/O in web stuff, 
particularly with STOMP.

Cowboy these days

http://aufdencamp.com/html5-demo

Web 3.0 Asynchronous Messaging (Push Technology)

    web 2.0
    mvc
    struts(2000)/rails(2004)/django(2003)
    ajax synchronous RPC expressed asynchronously in Javascript(1998, 2004(
    ajax long polling jetty/comet/continuations(2005)
        (300 seconds is a conventional default)

html5 2014
css3 2012
ecmascript5 2009

html5
    forms email/placeholder/regex
    media audio/video
    drawing/canvas
    postMessage messaging between windows
    geolocation
    LocalStorage
    indexedDB
    LocalFileSystem
    BLOBs
    WebWorkers
    WebSockets - this is what we are really looking tonight

Asynchronous Messaging
http://www.enterpriseintegrationpatterns.com/patterns/messaging/Messaging.html
Enterprise Integration Patterns
Gregor Hohpe
Bobby Woolf
book is entirely about message patterns
forwards by John Crupi and Martin Fowler

activemq
    java
    it has stomp connector

stomp
    simple text oriented message protocol
    http style design: like http, but for messaging
        headers
        body
    we're using json for the message body
    cross platform / cross language
    not tied to server
    need to know where broker is

wp:Streaming Text Oriented Messaging Protocol
http://stomp.github.io/

mark thinks that mvc is dead
stomp is another tool in box
messages are another first class event

wp:Apache Cordova
The Definitive Guide to HTML5 WebSocket - apress
    this is where I got idea to use stomp
    author put together a game between 
JavaScript: The Definitive Guide - O'Reilly
ActiveMQ in Action - Manning
Enterprise Integration Patterns - Addison Wesley

cors cross origin resource sharing
    is a pain in the ...
    allow access headers

mark thinks that stomp will be the websockets protocol

wp:waze
wp:moovit

good for internet of things

runs stomp daemon on a raspberry pi
    uses little memory
can probably run activemq on a raspberry pi

this async messaging is how firefox is collecting crash reports 
    he has talked with lars
        they moved from rabbitmq to amazon's message queuing system

asked to compare with
    crossbar
    web application messaging protocol
    wp:Web Application Messaging Protocol

amazon's sqs is rediculously amazing
    slug(???) replacement for 1000 servers
wp:Amazon Simple Queue Service

mark said to become a fan of javascript (imperative statement)

kind of like 1990s, where proprietary protocols were battling over locking

From jep200404 at columbus.rr.com  Sun Jun 26 14:16:43 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sun, 26 Jun 2016 14:16:43 -0400
Subject: [CentralOH] 
 =?utf-8?q?2015-10-26_=E6=9C=83=E8=AD=B0_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz86IGJyYW5kb24gcmhvZGVzIHRpbWUgc2F2ZXJzIGN1?=
 =?utf-8?q?t_paste_pyflakes_jedi_mark_aufdencamp_stomp_websocket_mvc_dead_?=
 =?utf-8?q?web_3=2E0_push_activemq_enterprise_integration_patterns_hohpe_w?=
 =?utf-8?q?oolf_cors_waze_moovit_crash_sqs?=
In-Reply-To: <20160626141328.2622f7bf.jep200404@columbus.rr.com>
References: <20160626141328.2622f7bf.jep200404@columbus.rr.com>
Message-ID: <20160626141643.1c3991e5.jep200404@columbus.rr.com>

On Sun, 26 Jun 2016 14:13:28 -0400, jep200404 at columbus.rr.com wrote:

> Subject: [CentralOH] 2016-05-23 ?? Scribbles 

Oh the joys of cut and paste.
That was supposed to be 2015-10-26.

From jep200404 at columbus.rr.com  Thu Jun 30 20:13:59 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Thu, 30 Jun 2016 20:13:59 -0400
Subject: [CentralOH] 2016-07-06 11:30 Wednesday Python Lunch at Bar 145
Message-ID: <20160630201359.68e96dbd.jep200404@columbus.rr.com>

Wednesday Python Lunch at Bar 145

July 6, 2016, 11:30 a.m.

Bar 145[1]
955 West Fifth Ave, Columbus, OH 43212[2]

We'll be meeting for good food and good company. Join us to talk Python,
programming, or anything else!

[1] http://bar145columbus.com/
[2] http://www.openstreetmap.org/search?query=955 West Fifth Ave, Columbus, OH 43212#map=19/39.98806/-83.03156