From herrold at owlriver.com  Wed Nov  2 10:52:17 2016
From: herrold at owlriver.com (R P Herrold)
Date: Wed, 2 Nov 2016 10:52:17 -0400 (EDT)
Subject: [CentralOH] Jim Prior's presentation a couple weeks ago
Message-ID: <alpine.LRH.2.03.1611021051110.30077@bjyevire.pbz>

at the Columbus Coding Fest on turning up an 8051 was a fun 
one.  Others seem to like the chip as well

http://www.technobyte.org/2016/10/8051-not-old-still-popular/

-- Russ herrold

From jep200404 at columbus.rr.com  Wed Nov  2 22:53:11 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Wed, 2 Nov 2016 22:53:11 -0400
Subject: [CentralOH] 2016-11-03 11:30 Python Lunch at Yin-Yue Restaurant (on
 a Thursday)
Message-ID: <20161102225311.52200931.jep200404@columbus.rr.com>

Python Lunch at Yin-Yue Restaurant

November 3, 2016, 11:30 a.m.

Yin-Yue Restaurant[1]
1236 East Hudson St[2]
Columbus, OH 43211

We'll be meeting for good food and good company.
Join us to talk Python, programming, or anything else!
Some folks know Arduinos, Raspberry Pis (which promote Python),
garage door openers, latching relays, and reed switches.

[1] http://yinyue-rest.com/
[2] http://www.mapquest.com/us/ohio/chinese-restaurants-columbus/yin-yue-restaurant-5595845

From eric at intellovations.com  Wed Nov  2 23:18:24 2016
From: eric at intellovations.com (Eric Floehr)
Date: Wed, 2 Nov 2016 23:18:24 -0400
Subject: [CentralOH] 2016-11-03 11:30 Python Lunch at Yin-Yue Restaurant
 (on a Thursday)
In-Reply-To: <20161102225311.52200931.jep200404@columbus.rr.com>
References: <20161102225311.52200931.jep200404@columbus.rr.com>
Message-ID: <CAJzarMMd+2gpx-Z8UffD7JW4JRUW2UZBE-=FX9+Kd+tGU1pJSQ@mail.gmail.com>

RSVP Here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/235315889/



On Wed, Nov 2, 2016 at 10:53 PM, <jep200404 at columbus.rr.com> wrote:

> Python Lunch at Yin-Yue Restaurant
>
> November 3, 2016, 11:30 a.m.
>
> Yin-Yue Restaurant[1]
> 1236 East Hudson St[2]
> Columbus, OH 43211
>
> We'll be meeting for good food and good company.
> Join us to talk Python, programming, or anything else!
> Some folks know Arduinos, Raspberry Pis (which promote Python),
> garage door openers, latching relays, and reed switches.
>
> [1] http://yinyue-rest.com/
> [2] http://www.mapquest.com/us/ohio/chinese-restaurants-
> columbus/yin-yue-restaurant-5595845
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From andrewkubera at gmail.com  Mon Nov  7 15:26:45 2016
From: andrewkubera at gmail.com (Andrew Kubera)
Date: Mon, 7 Nov 2016 15:26:45 -0500
Subject: [CentralOH] Python Style in C-Style Language?!
Message-ID: <4BD4E460-251F-49A8-8294-26DBD4C44A4D@gmail.com>

Inside every braces-style language is python syntax waiting to be found:

(source: http://hugsforeverett.tumblr.com/image/152850647670 <http://hugsforeverett.tumblr.com/image/152850647670>)




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From herrold at owlriver.com  Wed Nov  9 11:16:28 2016
From: herrold at owlriver.com (R P Herrold)
Date: Wed, 9 Nov 2016 11:16:28 -0500 (EST)
Subject: [CentralOH] free Python seminar as to computer assisted securities
 trading tomorrow
Message-ID: <alpine.LRH.2.03.1611091106260.21568@bjyevire.pbz>


https://www.interactivebrokers.com/en/?f=%2Fen%2Fgeneral%2Feducation%2Fwebinars.php%3Fib_entity%3Dllc

(choose API tab)

QuantInsti - Implement Algo Trading coded in Python using 
Interactive Brokers API November 10, 2016 9:30 ET

The session is designed for beginners and professionals in the 
world of Automated trading with Python. The focus of the 
session would be on the applicability of IBridgePy, which is 
an open-sourced software used to connect to Interactive 
Brokers C++ API for execution of python codes in live markets.

Skill Level: Intermediate

Speaker: Dr. Hui Liu, Faculty at QuantInsti (Pioneer Institute 
in Algo Trading Education) for EPAT???????, Founder, Running

Sponsored by: QuantInsti

There seems to be a recorded prior session at:
	https://www.youtube.com/watch?v=Cg3gejGX3Xk

I am not familiar with this particular 'wrapper' of the IB 
API; the code appears to be an extension of the prior Pythonic 
code of 'IBPy', originally from Troy Melhase a decade ago.  
That code still runs with minimal fixups.  There is a recent 
video of THAT code in use at:
	https://www.youtube.com/watch?v=Bu0kpU-ozaw

-- Russ herrold

From nludban at columbus.rr.com  Sun Nov 13 14:43:41 2016
From: nludban at columbus.rr.com (Neil Ludban)
Date: Sun, 13 Nov 2016 14:43:41 -0500
Subject: [CentralOH] parser/interpreter coding challenge
Message-ID: <20161113144341.2fa0a9a341d8bf3a090a675a@columbus.rr.com>

I wanted to implement this challenge before posting it with potentially
incorrect hints, but the day job keeps interfering.  Here it is anyways,
with potentially incorrect hints.

Short version:

This is essentially the fun coding part of an earlier project in a 400
level class in compiler construction...

I wrote a short program in a made up BASIC-like language, starting with
really easy stuff:

	REM Simple arithmetic expressions.
	100 print 42
	110 print 1 + 1
	120 print 2 * 2
	130 print 1 + 1 + 2 * 5 * 4

and progressing to more difficult constructs:

	REM Branch through a variable.
	700 z := 100
	710 goto z

Then implemented the framework for an interpreter:

	https://bitbucket.org/nludban/nlexcc/src/default/challenge/rebasic.py

Challenge Part 1: Follow the comments to finish implementing the
interpreter.  Requires writing regular expressions to "parse" each
line, then execute the appropriate actions based on the pattern
matched.

Challenge Part 2: Follow the comments to finish implementing the
parser.  Requires refactoring the interpreter to move the actions
into Statement and Expression clasess.


Long version:

Over the last ~8 months there have been several presentations and
lunch discussions on regular expressions, how to manage complicated
regular expressions, and where to go when the parsing problem gets
too big to code with regular expressions.

The coding challenge starts with exercises in writing REs, but then
moves on to other techniques.  A RE is (in theory) just a
	https://en.wikipedia.org/wiki/Finite-state_machine
which is good for matching certain kinds of patterns, but you can't
write a pattern to match an unlimited number of nested parentheses
or to verify correctly nested HTML open/close tags to an unlimited
depth.  (In practice, google your favorite RE library to see if it
has been hacked or extended to support this.)

In compiler construction, the first step is to transform the input
(a sequence of characters) into a sequence of tokens.  Or, take a
large input string (the source) and, using a bunch of regular
expressions, split it into smaller strings of keywords, identifiers,
numbers, puncuation, etc.  The strings are usually thrown away as the
tokens can be more easily coded as an enumeration with an optional
value, eg:
	"if x = 42:"
becomes:
	[IF, IDENTIFIER('x'), EQUAL, INTEGER(42), COLON]

A correct, but inefficient, implementation just needs to match the
input string against each RE in a list, keeping track of the first
RE that gets the longest match, then call an action function paired
with that RE passing in the matched substring.  The code that does
this is known as a lexer or scanner.  There are also libraries
which will merge a list of RE patterns into one giant RE pattern,
the best known is probably:
	https://en.wikipedia.org/wiki/Lex_%28software%29

The challenge language works around this by restricting the valid
syntax to single lines.  Once the line's overall pattern is known,
the list of things that can be expected while scanning an expression
is pretty small.

The next step in compiler construction is to match patterns against
the token string (sequence of tokens).  The challenge starts out
with a simple left to right expression evaluator (1 + 2 * 3 = 9),
then advances to an operator precedence parser (1 + 2 * 3 = 7),
which is about as complicated as one might want to implement by hand.

This collection of patterns is called the grammar, and the code that
processes the token string is a parser.  Where RE patterns are limited
to a finite state machine, parsers are generally a
	https://en.wikipedia.org/wiki/Pushdown_automaton

Recursive grammars can match patterns that REs cannot:

	expr -> ( expr )

Loosely read as "an expression inside matched parentheses reduces
to an expression", and if that expression is inside more parentheses,
the parser can keep matching the same pattern until they're all gone.

Grammars can easily do other interesting things, eg three rules to
cover arbitrarily complicated arithmetic expressions with addition,
subtraction, and parentheses:

	expr -> add_expr | mul_expr | ( expr ) | NUMBER
	add_expr -> expr + expr
	mul_expr -> expr * expr

where "|" is an "or" separator between several options.  Note the
Expression classes in part 2 of the challenge.  The first part of
the challenge was an interpreter which immediately evaluates each
expression and returns the result.  Part 2 is more like a compiler
because it builds an
	https://en.wikipedia.org/wiki/Abstract_syntax_tree
The action associated with matching the add_expr would create an
AddExpression object with the two Expression objects.  Matching
expr -> add_expr, the action can simply return the AddExpression,
which is already a subclass of Expression.

Also note the use of a stack in the challenge code, and the shift
and reduce methods.  This terminology came from the successor to the
operator precedence parser, the
	https://en.wikipedia.org/wiki/Canonical_LR_parser
which was too big for computers to process back in the day (1965),
so it was simplified a bit to create the
	https://en.wikipedia.org/wiki/LALR_parser
of which the best known library is perhaps
	https://en.wikipedia.org/wiki/Yacc

The lex and yacc libraries are really C programs that translate
C code mixed with RE patterns and grammar rules into more C code
that you can compile and link with your C program.  Alternatives
for C include flex and bison, and there are many others supporting
other languages.

For python, see
	http://www.dabeaz.com/ply/
and a short list of similar packages at the bottom of that page.  I
tried a few of them some years ago and found they tended to be either
too big to be worth the learning curve, or too small to provide a
well bahaved language definition interface (eg, inspecting the module
and adding rules in random/alphabetical order instead of source code
order, and one of the lexers incorrectly prioritized by length of
pattern instead of length of match).  YMMV.

The idea for this challenge came as a fun way of providing an
introduction to compiler terminology and implementation before trying
to give a presentation on an experiment in writing a lexer and LR
parser in Python.  (The experiment worked, it's getting cleaned up and
one day eventually will be available as 'nother lexer and compiler
compiler, "nlexcc".)



From betsy at python.org  Tue Nov 15 14:13:13 2016
From: betsy at python.org (Betsy Waliszewski)
Date: Tue, 15 Nov 2016 11:13:13 -0800
Subject: [CentralOH] PyCon US 2017 Call for Proposals & Deadlines - Central
 OH Python User Group
Message-ID: <CAKMnukpr8u_swv8mvuTTF65=perMAhm_GT6Z4d4Y1Ck0qD1mOg@mail.gmail.com>

Hello Central OH Python User Group,

PyCon US's proposal application is open.

If you are interested in submitting a proposal for a tutorial, talk,
poster, or the education summit, please check out
https://us.pycon.org/2017/speaking/.

? The deadline to submit a tutorial proposal is coming up: November 30,
2016 AoE.
? The deadline to submit proposals for talks, poster, and the Education
Summit is January 3, 2017 AoE.
? Financial aid is also accepting applications. Deadline is February 15,
2017 AoE (https://us.pycon.org/2017/financial-assistance/).
? PyCon US registration is open https://us.pycon.org/2017/registration/ and
we still have early bird ticket rates available.

Best Regards,

Betsy


-- 
Betsy Waliszewski
Python Software Foundation
Event Coordinator / Administrator
@betswaliszewski
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From jep200404 at columbus.rr.com  Sat Nov 19 14:08:56 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sat, 19 Nov 2016 14:08:56 -0500
Subject: [CentralOH] =?utf-8?q?2016-11-18_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gbWF0bGFiIHYgbnVtcHkvc2NpcHk7IGFudGlncmF2?=
 =?utf-8?q?ity=3B_hungarian_notation=3B_searching_sets_=26_Liszts=3B_bolto?=
 =?utf-8?q?ns=3B_sweigart=3B_pyvideos=3B_jupyter=3B_pandas=3B_r=3B_sympy?=
 =?utf-8?q?=3B_comprehensions=3B_generators=3B_anaconda=3B_virtual_environ?=
 =?utf-8?q?ments=3B_unpacking=3B_euler=3B_unix_philosophy=3B_recursion=3B_?=
 =?utf-8?q?closures=3B_tkinter=3B_tcl/tk?=
Message-ID: <20161119140856.25dea2c4.jep200404@columbus.rr.com>

6 folks tonight

import this
import antigravity
http://xkcd.com/353/

http://xkcd.com/327/
http://xkcd.com/378/
http://xkcd.com/149/
    explainxkcd.com/wiki/index.php/149
https://xkcd.com/936/
https://xkcd.com/195/
    http://matplotlib.org/xkcd/examples/showcase/xkcd.html

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

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

an engineering graduate
said there is nothing that matlab did (for his engineering homework)
that python/numpy/scipy/matplotlib can not do

can do a day's worth of cut and paste
in minutes with python
that engineer needs to borrow
"Automate the Boring Stuff with Python" by Al Sweigart

which is better for the following? matlab or numpy?
    http://xkcd.com/184/

boltons
https://pypi.python.org/pypi/boltons/
https://pypi.python.org/pypi/

pyvideo.org
    is alive an well
    Thanks Sheila
http://pyvideo.org/speaker/fernando-perez.html
    http://pyvideo.org/pycon-ca-2012/science-and-python-retrospective-of-a-mostly-s.html
http://pyvideo.org/speaker/brandon-rhodes.html
    http://pyvideo.org/pycon-us-2010/the-mighty-dictionary-55.html
    http://pyvideo.org/pycon-ca-2012/a-python-sthetic-beauty-and-why-i-python.html
    http://pyvideo.org/pyohio-2011/pyohio-2011-names-objects-and-plummeting-from.html
    http://pyvideo.org/pycon-us-2014/all-your-ducks-in-a-row-data-structures-in-the-s.html
    http://pyvideo.org/pyohio-2012/python-design-patterns-1.html
http://pyvideo.org/speaker/raymond-hettinger.html
    http://pyvideo.org/pycon-us-2013/transforming-code-into-beautiful-idiomatic-pytho.html
    http://pyvideo.org/pycon-us-2013/keynote-3.html
    http://pyvideo.org/pycon-us-2015/beyond-pep-8-best-practices-for-beautiful-inte.html

wp:Hungarian notation
http://imslp.org/wiki/File:TN-Liszt_Musikalische_Werke_2_Band_12_135.jpg
http://imslp.org/wiki/Special:IMSLPDisclaimerAccept/6/68/Liszt_-_S244_Hungarian_Rhapsody_No19_(busoni).pdf

jupyter notebook
    https://try.jupyter.org
r
numpy
scipy
matplotlib
pandas
sympy

list comprehension
dictionary comprehension
set comprehension
generator expression
generator function
nested generators
    https://mail.python.org/pipermail/centraloh/2013-June/001718.html

http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20161118-dojo-comprehensions-and-generators.ipynb

Is installing anaconda a workaround for not being allowed to do pip install?
Anaconda (Python distribution)
https://www.continuum.io/downloads

Using virtual environments is very strongly encouraged
for any significant Python project. Study:
    virtualenv
    venv (for Python 3.?)
    conda (from anaconda)

tuple unpacking
    can avoid annoying temporary variables
    handy for state machines
    which Brandon Rhodes or Raymond Hettinger presentation talks about this?

project euler

learn either emacs or vi(m)
the unix philosophy

recursion was one of Lars' epiphanies at 19:
http://pyvideo.org/pyohio-2015/the-well-tempered-api.html
closure will hurt your head again like recursion did:
http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20150223-cohpy-memoization.ipynb

Don?t Believe the Lies; Microsoft Hates Linux and Merely Pulls E.E.E. Tactics Against It, Including .NET Promotion
http://techrights.org/2016/11/16/microsoft-still-hates-linux/

http://www.cbsnews.com/news/office-depot-investigation-free-computer-check-service-sells-unnecessary-repairs/

Python's default GUI is tkinter,
which is based on tk, which is usually associated with tcl.
FlightAware, the aviation software and data provider, continues
to have an interest in Tcl. For those not familiar, Tcl is a
general purpose scripting language which, while not as widespread
as it has been in years past, continues to be popular for a
number of applications. In an update via a GitHub repo, the
company presented several "challenges" in Tcl for which they are
willing to pay to see integrated into Tcl's open source code
base. https://github.com/flightaware/Tcl-bounties

From cwandrews.oh at gmail.com  Sat Nov 19 14:25:28 2016
From: cwandrews.oh at gmail.com (cwandrews)
Date: Sat, 19 Nov 2016 14:25:28 -0500
Subject: [CentralOH] 
 =?utf-8?q?2016-11-18_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gbWF0bGFiIHYgbnVtcHkvc2NpcHk7IGFudGlncmF2?=
 =?utf-8?q?ity=3B_hungarian_notation=3B_searching_sets_=26_Liszts=3B_bolto?=
 =?utf-8?q?ns=3B_sweigart=3B_pyvideos=3B_jupyter=3B_pandas=3B_r=3B_sympy?=
 =?utf-8?q?=3B_comprehensions=3B_generators=3B_anaconda=3B_virtual_environ?=
 =?utf-8?q?ments=3B_unpacking=3B_euler=3B_unix_philosophy=3B_recursion=3B_?=
 =?utf-8?q?closures=3B_tkinter=3B_tcl/tk?=
In-Reply-To: <20161119140856.25dea2c4.jep200404@columbus.rr.com>
References: <20161119140856.25dea2c4.jep200404@columbus.rr.com>
Message-ID: <1479583528.21999.0@smtp.gmail.com>

All,

Regarding virtual environments I would also highly recommend pyenv 
(https://github.com/yyuu/pyenv).

I use it quite a bit and it and virtualenv are not mutually exclusive.

Just my thoughts.

Chris A.

On Sat, Nov 19, 2016 at 2:08 PM, jep200404 at columbus.rr.com wrote:
> 6 folks tonight
> 
> import this
> import antigravity
> http://xkcd.com/353/
> 
> http://xkcd.com/327/
> http://xkcd.com/378/
> http://xkcd.com/149/
>     explainxkcd.com/wiki/index.php/149
> https://xkcd.com/936/
> https://xkcd.com/195/
>     http://matplotlib.org/xkcd/examples/showcase/xkcd.html
> 
> 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
> 
> https://github.com/james-prior/cohpy/blob/master/20160523-cohpy-speed-of-searching-sets-and-lists-simplified.ipynb
> 
> an engineering graduate
> said there is nothing that matlab did (for his engineering homework)
> that python/numpy/scipy/matplotlib can not do
> 
> can do a day's worth of cut and paste
> in minutes with python
> that engineer needs to borrow
> "Automate the Boring Stuff with Python" by Al Sweigart
> 
> which is better for the following? matlab or numpy?
>     http://xkcd.com/184/
> 
> boltons
> https://pypi.python.org/pypi/boltons/
> https://pypi.python.org/pypi/
> 
> pyvideo.org
>     is alive an well
>     Thanks Sheila
> http://pyvideo.org/speaker/fernando-perez.html
>     
> http://pyvideo.org/pycon-ca-2012/science-and-python-retrospective-of-a-mostly-s.html
> http://pyvideo.org/speaker/brandon-rhodes.html
>     http://pyvideo.org/pycon-us-2010/the-mighty-dictionary-55.html
>     
> http://pyvideo.org/pycon-ca-2012/a-python-sthetic-beauty-and-why-i-python.html
>     
> http://pyvideo.org/pyohio-2011/pyohio-2011-names-objects-and-plummeting-from.html
>     
> http://pyvideo.org/pycon-us-2014/all-your-ducks-in-a-row-data-structures-in-the-s.html
>     http://pyvideo.org/pyohio-2012/python-design-patterns-1.html
> http://pyvideo.org/speaker/raymond-hettinger.html
>     
> http://pyvideo.org/pycon-us-2013/transforming-code-into-beautiful-idiomatic-pytho.html
>     http://pyvideo.org/pycon-us-2013/keynote-3.html
>     
> http://pyvideo.org/pycon-us-2015/beyond-pep-8-best-practices-for-beautiful-inte.html
> 
> wp:Hungarian notation
> http://imslp.org/wiki/File:TN-Liszt_Musikalische_Werke_2_Band_12_135.jpg
> http://imslp.org/wiki/Special:IMSLPDisclaimerAccept/6/68/Liszt_-_S244_Hungarian_Rhapsody_No19_(busoni).pdf
> 
> jupyter notebook
>     https://try.jupyter.org
> r
> numpy
> scipy
> matplotlib
> pandas
> sympy
> 
> list comprehension
> dictionary comprehension
> set comprehension
> generator expression
> generator function
> nested generators
>     https://mail.python.org/pipermail/centraloh/2013-June/001718.html
> 
> http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20161118-dojo-comprehensions-and-generators.ipynb
> 
> Is installing anaconda a workaround for not being allowed to do pip 
> install?
> Anaconda (Python distribution)
> https://www.continuum.io/downloads
> 
> Using virtual environments is very strongly encouraged
> for any significant Python project. Study:
>     virtualenv
>     venv (for Python 3.?)
>     conda (from anaconda)
> 
> tuple unpacking
>     can avoid annoying temporary variables
>     handy for state machines
>     which Brandon Rhodes or Raymond Hettinger presentation talks 
> about this?
> 
> project euler
> 
> learn either emacs or vi(m)
> the unix philosophy
> 
> recursion was one of Lars' epiphanies at 19:
> http://pyvideo.org/pyohio-2015/the-well-tempered-api.html
> closure will hurt your head again like recursion did:
> http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20150223-cohpy-memoization.ipynb
> 
> Don?t Believe the Lies; Microsoft Hates Linux and Merely Pulls 
> E.E.E. Tactics Against It, Including .NET Promotion
> http://techrights.org/2016/11/16/microsoft-still-hates-linux/
> 
> http://www.cbsnews.com/news/office-depot-investigation-free-computer-check-service-sells-unnecessary-repairs/
> 
> Python's default GUI is tkinter,
> which is based on tk, which is usually associated with tcl.
> FlightAware, the aviation software and data provider, continues
> to have an interest in Tcl. For those not familiar, Tcl is a
> general purpose scripting language which, while not as widespread
> as it has been in years past, continues to be popular for a
> number of applications. In an update via a GitHub repo, the
> company presented several "challenges" in Tcl for which they are
> willing to pay to see integrated into Tcl's open source code
> base. https://github.com/flightaware/Tcl-bounties
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
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From brian.costlow at gmail.com  Sat Nov 19 20:25:20 2016
From: brian.costlow at gmail.com (Brian Costlow)
Date: Sat, 19 Nov 2016 20:25:20 -0500
Subject: [CentralOH] Tech Community Holiday Party(ies)
Message-ID: <CACLJ_dGrMxm=YP4gKOr0HDKWHZ+A2cj=Phz4yUFZoFn2ZwikTQ@mail.gmail.com>

As I posted earlier, COhPy is participating in the Columbus Tech Community
holiday party this year. It's a great chance to get out and meet with
people from other tech user groups in the area.

The date finally settled on 12/13, after bouncing around a bit looking for
a venue.

It'll be at the Big Room Bar:
1036 South Front Street
Columbus, OH 43206

There will be live music and free food and drink.

Details and registration here.

https://www.eventbrite.com/e/columbus-tech-community-holiday-celebration-tickets-29312176509?aff=es2

We're also still having our own get together at Barley's
http://barleysbrewing.com/ on 12/5 at 6:00 PM.

Hope to see you all there.
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From eric at intellovations.com  Sat Nov 19 23:55:39 2016
From: eric at intellovations.com (Eric Floehr)
Date: Sat, 19 Nov 2016 23:55:39 -0500
Subject: [CentralOH] Python challenge for the Thanksgiving Holiday
Message-ID: <CAJzarMMfwDLCOBwJVC_h0x+pN=Mtmv7tP3RM_amkUfrQ2iGW5Q@mail.gmail.com>

(don't forget the YouTube Python challenge as well...)

This is from 538's "Riddler" series. Source here:
http://fivethirtyeight.com/features/this-challenge-will-boggle-your-mind/

What arrangement of any letters on a Boggle board has the most points
attainable? Boggle is played with a 4-by-4 grid of letters. Points are
scored by finding strings of letters ? connected in any direction,
horizontally, vertically or diagonally ? that form valid words at least
three letters long. Words 3, 4, 5, 6, 7 or 8 or more letters long score 1,
1, 2, 3, 5 and 11 points, respectively. (You can find the full official
rules here[1].)

Extra credit: What if you limit the hypothetical configurations to only
those that are possible using the actual letter cubes[2] included with the
game?

(If you need a word list to aid in your quest, feel free to use the
public-domain ENABLE list[3] ? a modified version of which is used in Words
With Friends.)


[1] http://www.hasbro.com/common/instruct/boggle.pdf

[2]
http://www.bananagrammer.com/2013/10/the-boggle-cube-redesign-and-its-effect.html

[3]
https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/dotnetperls-controls/enable1.txt
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From eric at intellovations.com  Mon Nov 21 15:01:47 2016
From: eric at intellovations.com (Eric Floehr)
Date: Mon, 21 Nov 2016 15:01:47 -0500
Subject: [CentralOH] Tech Community Holiday Party(ies)
In-Reply-To: <CACLJ_dGrMxm=YP4gKOr0HDKWHZ+A2cj=Phz4yUFZoFn2ZwikTQ@mail.gmail.com>
References: <CACLJ_dGrMxm=YP4gKOr0HDKWHZ+A2cj=Phz4yUFZoFn2ZwikTQ@mail.gmail.com>
Message-ID: <CAJzarMNOJh_Myj+YYgT+pyJKQyns3mbD7HTZ1osBVKSZGEv8Gg@mail.gmail.com>

>
> We're also still having our own get together at Barley's http://
> barleysbrewing.com/ on 12/5 at 6:00 PM.
>

RSVP here for this:
https://www.meetup.com/Central-Ohio-Python-Users-Group/events/228901555/

While the "official" start time is 6, come whenever... before, after, etc.
We'll just be hanging out.
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From jep200404 at columbus.rr.com  Wed Nov 23 09:57:37 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Wed, 23 Nov 2016 09:57:37 -0500
Subject: [CentralOH] =?utf-8?q?2016-11-11_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gcHl0aG9uIGRldmVsb3BtZW50IG9uIGNocm9tZWJv?=
 =?utf-8?q?ok=3B_cscc_miami=3B_optimization=3B_Li-ion_cells=3B_containers_?=
 =?utf-8?q?and_clouds?=
Message-ID: <20161123095737.0e8ecc50.jep200404@columbus.rr.com>

9 folks tonight

what is best way to do python development on a chromebook?
    dual boot chromeos and Linux desktop?
    just use chromebook at fat terminal to cloud (such as try.jupyter.org)?

CSCC then transfer to Miami
http://www.cscc.edu/academics/transfer/colleges/miami-university.shtml
http://www.linuxtoday.com/infrastructure/1999010200105NWCY

You optimize for what you measure.
(If you do not want to optimize for something, then do not measure it.)

The care and feeding of your embedded design's Li-ion battery subsystem
http://www.embedded.com/design/power-optimization/4007610/The-care-and-feeding-of-your-embedded-design-s-Li-ion-battery-subsystem

Runaway Lithium-Ion batteries
http://www.edn.com/electronics-blogs/dave-s-power-trips/4407381/Runaway-Lithium-Ion-batteries

Self-taught Software Developers: Why Open Source is important to us
https://medium.com/rocknnull/self-taught-software-engineers-why-open-source-is-important-to-us-fe2a3473a576#.reqaqvymw

Tilling the Brownfield: Bumps on the Road to the Container Dream
https://www.linux.com/news/tilling-brownfield-bumps-road-container-dream

How We Knew It Was Time to Leave the Cloud
https://about.gitlab.com/2016/11/10/why-choose-bare-metal/

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

From jep200404 at columbus.rr.com  Fri Nov 25 21:53:46 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Fri, 25 Nov 2016 21:53:46 -0500
Subject: [CentralOH] =?utf-8?q?2016-10-28_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gTEVEczsgZmlsZSBtYW5hZ2VtZW50OyB4djY7IGxp?=
 =?utf-8?q?ons=27_commentary=3B_amygdala_hijack=3B_bokeh?=
Message-ID: <20161125215346.3e5f23d1.jep200404@columbus.rr.com>

wp:LED#Colors_and_materials

Python file-management tricks for digital artists
https://opensource.com/life/16/10/python-file-management-tricks-digital-artists

simple enough to cover in a semester
OSU is not listed
wp:xv6

wp:Lions' Commentary on UNIX 6th Edition, with Source Code

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

Stupid Patent Of The Month: Changing The Channel
https://www.techdirt.com/articles/20161031/13554635927/stupid-patent-month-changing-channel.shtml

HTML 5.1 Now an Official Web Standard
http://www.internetnews.com/blog/skerner/html-5.1-now-an-official-web-standard.html

wp:Amygdala hijack

pybokeh
wp:bokeh
much bokeh, no py as far I know
youtube.com/watch?v=5Axtb8UL8tc

TiVo?s ?TV Guide? patents are DOA at appeals court
http://arstechnica.com/tech-policy/2016/11/rovis-tv-guide-patents-now-owned-by-tivo-are-doa-at-appeals-court/

How would you do this in python (instead of shell)?
Spinning and Text Processing
http://www.linuxjournal.com/content/spinning-and-text-processing

foundry is shopping for a good scope for novices to use
    needs to be independent appliance (PC based is not good)

wp:Chinilpa

From jep200404 at columbus.rr.com  Fri Nov 25 22:41:43 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Fri, 25 Nov 2016 22:41:43 -0500
Subject: [CentralOH] =?utf-8?q?2016-10-14_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gUGFydCBGb3VyOiByZW1vdGUgZWRpdG9yIHNwZWVk?=
 =?utf-8?q?=3B_ansible_galaxy=3B_vim_tips_tricks=3B_udp?=
Message-ID: <20161125224143.74c41b85.jep200404@columbus.rr.com>

Part Four:

The full version seems to have been caught in some filters,
so it is being reposted in smaller pieces.

network latency kills performance on protocols with much back and forth
    how fast is your favorite editor over ssh?
        to a computer on a far continent?
    If not vi or emacs, how does that compare with vi and emacs?

    (try running an X program remotely from other continent)

Red Hat Launches First Open Source Release of Ansible Galaxy
https://www.redhat.com/en/about/press-releases/red-hat-launches-first-open-source-release-ansible-galaxy

https://www.rosehosting.com/blog/vim-tips-and-tricks/

http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20161014-dojo-import.ipynb

see on T-shirt:

    UDP PACKET BAR
    WALKS A INTO

From jep200404 at columbus.rr.com  Tue Nov 29 16:50:35 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Tue, 29 Nov 2016 16:50:35 -0500
Subject: [CentralOH] =?utf-8?q?2016-11-25_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gcHl0aG9uICYgdW5peCB0cmFkaXRpb247IG5lc3Rl?=
 =?utf-8?q?d_data_structures=3B_Pythonic_versus_non-Pythonic_code_problem?=
 =?utf-8?q?=3B_v_R_for_machine_learning=3B_v_C/C++_in_embedded_systems=3B_?=
 =?utf-8?q?consenting_adults=3B_essays=3B_validate_decorator=3B_=40propert?=
 =?utf-8?q?y?=
Message-ID: <20161129165035.4db7f9ad.jep200404@columbus.rr.com>

3 folks tonight

Microsoft and Its Patent Trolls Continue to Lobby for Software Patents
http://techrights.org/2016/11/19/msft-lobby-for-software-patents/

Python and the Glories of the UNIX Tradition
http://pyvideo.org/pycon-uk-2016/python-and-the-glories-of-the-unix-tradition.html

nest data structures in:
    python
    perl

Unix philosophy
https://en.wikipedia.org/wiki/The_unix_philosophy
https://en.wikipedia.org/wiki/The_unix_philosophy#The_UNIX_Programming_Environment
"the last operating system"

"DO NOT, under ANY circumstances, create and/or modify Linux files using
Windows apps, tools, scripts, consoles, etc.,"
https://redmondmag.com/articles/2016/11/18/microsoft-warns-bash-on-windows.aspx

https://github.com/notnownikki/
lightning talk

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

ala Burke's Connections:
wp:Pythonidae
wp:Snakes (M. C. Escher)
wp:G?del, Escher, Bach
wp:Kurt G?del
    "own work no longer meant much, that he came to the Institute merely ...
    to have the privilege of walking home with G?del"
wp:P versus NP problem
"P versus NP problem" really means "Pythonic versus non-Pythonic code problem"
    Beyond PEP 8 -- Best practices for beautiful intelligible code
    http://pyvideo.org/pycon-us-2015/beyond-pep-8-best-practices-for-beautiful-inte.html
    There is a good section where he converts a Javaesque API to be Pythonic.
    Sweet! 20:00-40:20
        context manager (__enter__, __exit__) to handle start up and tear down
        sequence class (__len__, __getitem__) to allow normal iteration
        @property syntactic sugah to convert attributes to function calls

        but where are the files?
            p_vs_np_2.py?
            p_vs_np_4.py?
            misc1.py?

Python versus R for machine learning and data analysis
https://opensource.com/article/16/11/python-vs-r-machine-learning-data-analysis

Python vs. C/C++ in embedded systems
https://opensource.com/life/16/8/python-vs-cc-embedded-systems

12:00:12
12:00:17
12:00:23
12:00:24

Malware Found on New Windows Computers (Not What You Think)
An investigative team for a Seattle television station discovered that finding
malware on clean computers to be an everyday practice at Office Depot.
http://fossforce.com/2016/11/malware-found-new-windows-computers-not-think/

Need a Python entry for the following.
How to Determine Which Programming Language You're Using
http://lsc.fie.umich.mx/~juan/Materias/FIE/Lenguajes/Info/shoot.html

What's the best thing about UDP jokes?

    I don't care if you get them.

technically correct: the best kind of correct
http://www.devtopics.com/wp-content/uploads/2008/05/comic.jpg

Python is a language for consenting adults.

    Python's Class Development Toolkit
    by Raymond Hettinger 2013-03-16
    http://pyvideo.org/pycon-us-2013/pythons-class-development-toolkit.html

Python Essays
https://www.python.org/doc/essays/

podcast.init

talk python to me
Episode #25:
Effective Python
https://talkpython.fm/episodes/transcript/25/effective-python

sqlalchemy with flask
sqlalchemy
    validate decorator

wp:Property (programming)
wp:Property_(programming)#Python
http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20161125-dojo-property-decorator-read-only-attribute.ipynb
http://nbviewer.jupyter.org/github/james-prior/cohpy/blob/master/20161125-dojo-property-decorator-read-write-attribute.ipynb

The Monty Python references come even from non-Python bitheads:
http://www.linuxjournal.com/content/message-you-sir