Starting Python - Speaker Deck

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Pythonͷ࢝Ίํ

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࠷ۙPython͕੝Γ্͕͍ͬͯΔ

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2015೥11݄Ҏ߱(46࡭த)

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৐Δ͔͠ͳ͍ʂ ͜ͷϏοά΢Σʔϒʹʂ

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CentOSͳΒPython͕ΠϯετʔϧࡁΈ $ python Python 2.6.6 (r266:84292, Aug 18 2016, 15:13:37) [GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> print "Hello World" Hello World >>> exit()

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͓ΘΓ

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ͱ͍͏༁ʹ͸͍͔ͳ͍

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CentOSͰ͸ όʔδϣϯ͕ݹ͍

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PythonͷόʔδϣϯҠߦ໰୊ʹ͍ͭͯ ͸ɺ௕͍͜ͱ࢖ͬͯΔ਎ͱͯ͠͸৭ʑ ࢥ͏ͱ͜Ζ͕͋Γ·͢ɻ͜ͷ࿩͸௕͘ ͳΔͷͰࠓ೔͸ׂѪ͢Δ͚Ͳɺͱʹ͔ ͘ࠓ͸ʮPython3ܥΛ࢖͏ʯͷ͕ྑ͍ Ͱ͢ɻͰ΋ɺAWSLambda͸2ܥͰπ ϥΠɻGoΛ࢖͍·͠ΐ͏ɻ

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Πϯετʔϧ(OLD) • xbuild ͕ศར $ git clone https://github.com/tagomoris/xbuild.git $ cd xbuild $ ./python-install 3.5.2 ~/local/python-3.5.2

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Πϯετʔϧ • ඪ४ͷΠϯετʔϥʔΛ࢖͍·͠ΐ͏ • https://www.python.org/downloads/ • ࠷৽͸ 3.6.0 • όʔδϣϯϚωʔδϟ͸ෆཁʢޙड़ʣ

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SDKͷόʔδϣϯ؅ཧ ෳ਺ͷPythonΛΠϯετʔϧ͢Δͱ… % ls /usr/local/bin/python3* /usr/local/bin/python3@ /usr/local/bin/python3.5m-config@ /usr/local/bin/python3-32@ /usr/local/bin/python3.6@ /usr/local/bin/python3-config@ /usr/local/bin/python3.6-32@ /usr/local/bin/python3.5@ /usr/local/bin/python3.6-config@ /usr/local/bin/python3.5-32@ /usr/local/bin/python3.6m@ /usr/local/bin/python3.5-config@ /usr/local/bin/python3.6m-config@ /usr/local/bin/python3.5m@ ͜͏ͳΔɻ

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ݸผͷϓϩδΣΫτͷόʔδϣϯ͸ʁ • venv Λ࢖ͬͯSDKࣗମΛόϯυϧ͢Δ % pwd /Users/kekawano/hoge % python3.5 -m venv venv % ls venv/ % ls venv/ bin/ include/ lib/ pip-selfcheck.json pyvenv.cfg

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venv ͷ࢖͍ํ • όʔδϣϯͷݻఆ • ࢖͍͍ͨpython -m venv σΟϨΫτϦ໊ • ༗ޮԽ • source σΟϨΫτϦ໊/bin/activate • ແޮԽ • deactivate

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ྫ % which python /usr/bin/python % source venv/bin/activate % which python /Users/kekawano/hoge/venv/bin/python % python -V Python 3.5.1 % deactivate % python -V Python 2.7.10

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ύοέʔδ؅ཧ • pip Λ࢖͏ % which pip /Users/kekawano/hoge/venv/bin/pip % pip install flask % pip show flask ... Location: /Users/kekawano/hoge/venv/lib/python3.5/site-packages ... • venv Ͱ؀ڥ͕ด͍ͯ͡ΔͷͰGlobalʹӨڹ͠ͳ͍ • PyPI - the Python Package Index : Python Package Index

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؆୯ͳWebΞϓϦ from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return "Hello world!" if __name__ == "__main__": app.run()

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Pythonͷಛ௃ • ಈతܕ෇͚ݴޠ • Indented Block • ਺஋ܭࢉͷϥΠϒϥϦ๛෋

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࠷ۙͷPython • ඇಉظॲཧʹରԠ async/await • จࣈྻͷf-string • type hinting

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ύοέʔδ • module = ﬁle • mod1.py • package = directory • mod2/init.py

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࣮ߦ python mod1.py python mod2 • mod2/main.py