[CentralOH] 2016-03-28 會議 Scribbles 落書/惡文?: islice naked except: clauses are bad pi3 leap day challenge jason green sh samuel rivera baby learning ethan dicks python on rpi mike rehner ubuntu make eric floehr comprehensions built-in functions brian costlow pyohio 2016 linking wizard

Thu May 26 16:37:31 EDT 2016

Thanks to Pillar for hosting us.

PyOhio is July 30, 31 2016.

32 folks

Pi3 is announced
ARMv8, quad core, 1.2 GHz, 1GB RAM, wifi b/g/n, bluetooth, $35
http://linuxgizmos.com/quad-core-64-bit-pi-3-is-official-with-wifi-bt-and-35-price/
http://news.softpedia.com/news/raspberry-pi-3-officially-released-ten-time-more-powerful-than-original-model-501125.shtml
http://fossforce.com/2016/02/official-raspberry-pi-3/
http://lxer.com/module/newswire/view/226426/

The Simple Truth About What Xamarin Was All Along to Microsoft,
Just Like Ximian and Novell (Post-Patent Deal)
http://techrights.org/2016/02/28/xamarin-ximian-and-novell/

SCO vs. IBM looks like it's over for good
http://www.theregister.co.uk/2016/02/29/sco_vs_ibm_over/

Confirmed: IBM slurps up Bruce Schneier with Resilient purchase
http://www.theregister.co.uk/2016/02/29/confirmed_ibm_slurps_up_bruce_schneier_with_resilient_purchase/

Old Boy
Play Misty For Me
The Producers
    http://www.breitbart.com/big-hollywood/2016/02/29/watch-nathan-lane-matthew-broderick-mock-trump-supporters-jimmy-kimmel-live/

subbed, not dubbed
    (read subtitles instead of dubbing in English)
wp:The Way of the Gun
wp:Brotherhood of the Wolf
bar.foo
    google owns .foo domain?
google foobar recruiting
google cardboard

Michael
Quantopia
    pays coders a cut of 
    http://www.quantopia.net/
    wp:Quantopian
    test on their system
Bourne shell's pipe beats Python all to heck
toolz.pipe

wp:Freaknik

GitHubber wants to revive the first Unix in a PDP-7 emulator
http://www.theregister.co.uk/2016/02/29/githubber_wants_to_revive_the_first_unix_in_a_pdp7_emulator/

Does Disney have openings for Python talent?
http://www.breitbart.com/immigration/2016/02/29/disney-worker-american-father-forced-to-retrain-foreign-hires-it-was-torture/

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Leap Day Challenge
write Python code to figure out when next COhPy meeting is on a leap day

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Jason Green 10 minute lightning talk on sh module

    See github.com/gjigsaw for ipynb file of this presentation.
    Ask him for it if you don't see it.

    module: sh
    author: Andrew Moffat
    source: https://github.com/amoffat/sh
    docs: https://amoffat.github.io/sh

    # pip install sh
    import sh

    sh.ls()
    sh.ls('-l')
    sh.pip('install', 'pytest')
    !py.test --help
    sy.py.test  # This does not work, so:
    sh.Command('py.test')('--help')  # This works.
    sh.Command('/bin/ls')('-alh')
    lscmd = sh.Command('/bin/ls')  # Compare to functools.partial().
    lscmd('-alh')
    sh.df('-T', '--block-size', '1G')  # Last two arguments are associated.
    sh.df('-T', blocksize='1G')  # This shows meaning of '1G' better.
    sh.sleep(3)  # this blocks.
    print('delayed')
    sh.sleep(3, bg=True)  # This does not block.
    print('immediate')
    sh.sort(sh.du(sh.glob('*'), '-sb'), '-rn') # pipe (ugly syntax)
    import toolz
    sh.wc(sh.ls('/etc', '-l'), '-l')
    sh.git.init('foo')  # Access sub-commands via dot notation.
    output = sh.ls('/')
    output.exit_code  # See exit codes.
    sh.ls('*.ipynb')  # Fails, because ls does not grok globs.
    sh.ls(sh.glob('*.ipynb'))  # This works.
    lslah = sh.ls.bake('-lah')  # Bake (ala partial) an argument into command.
    lslah('/')
    # See https://amoffat.github.io/sh
    # Works on Linux and OSX only. (No MS Windows)

    ipython notebook with reveal.js and rise

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Samuel Rivera

    post-doc reasearcher for a few more weeks
    Sam presented about tracking babies' eyes to infer when they learn.
        learn categories: three months old
        first speech: 12 months old
        vocabulary spurt: 18 months
        how do labels or words affect category learning?
        babies are too young to say what they are thinking, so track eyes
    Modeling category learning dynamics with Self Organizing Maps (with Python)
    categories and words
        e.g., cats and living things
    Plunkett: labels could override what categories you learn
    Plunkett, Hu, & Cohen, 2008
    Gliozzi labels as features
        unsupervised feature-based learning of the categories using
        SOM: self organizing maps
    github.com/JustGlowing/minisom
    https://github.com/sriveravi/som    
        does not follow PEP8
    http://samuelrivera.co/
    sriveravi at gmail.com
    sriveravi.github.io

    exemplar

    likes Python
        sexy language
        can keep using after school because it's free
        sharing culture (like academia)
            wp:The Cathedral and the Bazaar

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Ethan Dicks

    next month will show Raspberry Pi stuff that uses Python

    Pi Zero with Sense Hat
    Pi 3 released today: has wifi & bluetooth for $35

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Mike Rehner

    Easy way to install whole bunch of Python stuff in Ubuntu.
    Ubuntu Make will install fat Python

    install personal package archive (ppa)
    https://wiki.ubuntu.com/ubuntu-make
    https://github.com/ubuntu/ubuntu-make

    do:
        Ubuntu == 16.04:

            sudo apt-get install ubuntu-make

        Ubuntu < 16.04:

            sudo add-apt-repository ppa:ubuntu-desktop/ubuntu-make
            sudo apt-get update
            sudo apt-get install ubuntu-make

    java was not installed on his machine

    umake --h

    umake ide phcharm

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Eric Floehr

    show comprehensions and some built-in functions
    min(), max(), any(), all(), sum()

    mkvirtualenv 201502cohpy
    workon 201502cohpy
    jupyter notebook

    weatherunderground api
    wunderground.com/weather/api/?MR=1

    When catching exceptions, mention specific exceptions whenever possible
    instead of using a bare  except:  clause.

    yes:

        try:
            # Python2
            import urllib2
        except ImportError:  # That ImportError is important.
            # Python2
            import urllib.request as urllib2

    no:

        try:
            # Python2
            import urllib2
        except:  # That ImportError is important.
            # Python2
            import urllib.request as urllib2

    comprehensions

        list
        set
        dictionary
        generator expression (not really a comprehension)

    To get n'th item of a generator, use islice from itertools.

    Please post the jupyter notebook on github.com/cohpy.

        (redact api keys or passwords)

    What year is the next Leap Day COhPy meeting?
    Solve with Python.
    Mail your code to eric at intellovations.com.

    Someone has been slack in getting PyOhio web site up for 2016.
    Still says August 1-2, 2015.

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Brian Costlow

    PyOhio 2016

    main days are July 30 and 31, 2016.
    CFP will go out in March
    Want beginners to fill about 1/3 of slots.

    Social gathering on Monday at Linking Wizard.
    Linking Wizard is at Fifth Ave and Grandview Ave.