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Starting Python
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Kentaro Kawano
July 10, 2017
Programming
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Starting Python
Pythonを始められるような基本的なところ
Kentaro Kawano
July 10, 2017
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Transcript
Pythonͷ࢝Ίํ
࠷ۙPython͕Γ্͕͍ͬͯΔ
201511݄Ҏ߱(46த)
Δ͔͠ͳ͍ʂ ͜ͷϏοάΣʔϒʹʂ
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()
͓ΘΓ
ͱ͍͏༁ʹ͍͔ͳ͍
CentOSͰ όʔδϣϯ͕ݹ͍
PythonͷόʔδϣϯҠߦʹ͍ͭͯ ɺ͍͜ͱͬͯΔͱͯ͠৭ʑ ࢥ͏ͱ͜Ζ͕͋Γ·͢ɻ͜ͷ͘ ͳΔͷͰࠓׂѪ͢Δ͚Ͳɺͱʹ͔ ͘ࠓʮPython3ܥΛ͏ʯͷ͕ྑ͍ Ͱ͢ɻͰɺAWSLambda2ܥͰπ ϥΠɻGoΛ͍·͠ΐ͏ɻ
None
Πϯετʔϧ(OLD) • xbuild ͕ศར $ git clone https://github.com/tagomoris/xbuild.git $ cd
xbuild $ ./python-install 3.5.2 ~/local/python-3.5.2
Πϯετʔϧ • ඪ४ͷΠϯετʔϥʔΛ͍·͠ΐ͏ • https://www.python.org/downloads/ • ࠷৽ 3.6.0 • όʔδϣϯϚωʔδϟෆཁʢޙड़ʣ
SDKͷόʔδϣϯཧ ෳ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
ݸผͷϓϩδΣΫτͷόʔδϣϯʁ • venv ΛͬͯSDKࣗମΛόϯυϧ͢Δ % pwd /Users/kekawano/hoge % python3.5 -m
venv venv % ls venv/ % ls venv/ bin/ include/ lib/ pip-selfcheck.json pyvenv.cfg
venv ͷ͍ํ • όʔδϣϯͷݻఆ • ͍͍ͨpython -m venv σΟϨΫτϦ໊ •
༗ޮԽ • source σΟϨΫτϦ໊/bin/activate • ແޮԽ • deactivate
ྫ % 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
ύοέʔδཧ • pip Λ͏ % 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 Ͱڥ͕ด͍ͯ͡ΔͷͰGlobalʹӨڹ͠ͳ͍ • PyPI - the Python Package Index : Python Package Index
؆୯ͳWebΞϓϦ from flask import Flask app = Flask(__name__) @app.route("/") def
hello(): return "Hello world!" if __name__ == "__main__": app.run()
Pythonͷಛ • ಈతܕ͚ݴޠ • Indented Block • ܭࢉͷϥΠϒϥϦ๛
࠷ۙͷPython • ඇಉظॲཧʹରԠ async/await • จࣈྻͷf-string • type hinting
ύοέʔδ • module = file • mod1.py • package =
directory • mod2/init.py
࣮ߦ python mod1.py python mod2 • mod2/main.py