Starting Python

Pythonを始められるような基本的なところ

Transcript

1. Pythonͷ࢝Ίํ
2. ࠷ۙPython͕੝Γ্͕͍ͬͯΔ
3. 2015೥11݄Ҏ߱(46࡭த)
4. ৐Δ͔͠ͳ͍ʂ ͜ͷϏοά΢Σʔϒʹʂ
5. 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()
6. ͓ΘΓ
7. ͱ͍͏༁ʹ͸͍͔ͳ͍
8. CentOSͰ͸ όʔδϣϯ͕ݹ͍
9. PythonͷόʔδϣϯҠߦ໰୊ʹ͍ͭͯ ͸ɺ௕͍͜ͱ࢖ͬͯΔ਎ͱͯ͠͸৭ʑ ࢥ͏ͱ͜Ζ͕͋Γ·͢ɻ͜ͷ࿩͸௕͘ ͳΔͷͰࠓ೔͸ׂѪ͢Δ͚Ͳɺͱʹ͔ ͘ࠓ͸ʮPython3ܥΛ࢖͏ʯͷ͕ྑ͍ Ͱ͢ɻͰ΋ɺAWSLambda͸2ܥͰπ ϥΠɻGoΛ࢖͍·͠ΐ͏ɻ
11. Πϯετʔϧ(OLD) • xbuild ͕ศར $ git clone https://github.com/tagomoris/xbuild.git $ cd xbuild $ ./python-install 3.5.2 ~/local/python-3.5.2
12. Πϯετʔϧ • ඪ४ͷΠϯετʔϥʔΛ࢖͍·͠ΐ͏ • https://www.python.org/downloads/ • ࠷৽͸ 3.6.0 • όʔδϣϯϚωʔδϟ͸ෆཁʢޙड़ʣ
13. 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
14. 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
15. venv ͷ࢖͍ํ • όʔδϣϯͷݻఆ • ࢖͍͍ͨpython -m venv σΟϨΫτϦ໊ • ༗ޮԽ • source σΟϨΫτϦ໊/bin/activate • ແޮԽ • deactivate
16. ྫ % 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
17. 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
18. ؆୯ͳWebΞϓϦ from flask import Flask app = Flask(__name__) @app.route("/") def hello(): return "Hello world!" if __name__ == "__main__": app.run()
19. Pythonͷಛ௃ • ಈతܕ෇͚ݴޠ • Indented Block • ਺஋ܭࢉͷϥΠϒϥϦ๛෋
20. ࠷ۙͷPython • ඇಉظॲཧʹରԠ async/await • จࣈྻͷf-string • type hinting
21. ύοέʔδ • module = file • mod1.py • package = directory • mod2/init.py
22. ࣮ߦ python mod1.py python mod2 • mod2/main.py