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Re: Respect the Built-in Names
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momijiame
September 09, 2017
Science
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Re: Respect the Built-in Names
PyCon JP 2017 Day2 LT
momijiame
September 09, 2017
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Transcript
Re: Respect the Built-in Names ~ ੩తίʔυղੳπʔϧͷ׆༻ ~ PyCon JP
2017 Day2 LT (2017/9/9) @momijiame
͓લɺ୭Α • Twitter: @momijiame • Blog: http://blog.amedama.jp/ • Book: εϚʔτPythonϓϩάϥϛϯά
• Proposal: ࣮ફSQLAlchemy (མબ)
͜ͷ LT ͷ͖͔͚ͬ • PyCon JP 2017 Day1 LT •
@CardinalXaro ͞Μ • λΠτϧ: Respect the Built-in Names • ༰: ϏϧτΠϯؔʹਓݖ͋Δʂ
ਓݖ৵ͷྫ def max(elements): … def f(id, name): … str =
'Hello, World!'
͋Δ͋Δ…
ͦΜͳʹ͋Δ͋ΔͳΒ ࣗಈͰνΣοΫ͍ͨ͠
ຊͷϝΠϯςʔϚ
੩తίʔυղੳπʔϧͷ׆༻
੩తίʔυղੳπʔϧͱʁ • ιʔείʔυΛ੩తʹղੳ͢Δπʔϧͷ͜ͱ • ੩త: ιʔείʔυΛ࣮ࡍʹಈ͔͞ͳ͍ • యܕతʹ AST (நߏ)
Λղੳ͢Δ • ಈత: ιʔείʔυΛ࣮ࡍʹಈ͔ͯ͠ΈΔ
πʔϧΛͬͨͱ͖ͷخ͠͞ • νΣοΫͯ͘͠ΕΔ͜ͱͷྫ • ίʔσΟϯάελΠϧʹԊ͍ͬͯΔ͔ʁ • όάͷݪҼͱͳΔΑ͏ͳهड़ͳ͍͔ʁ • ਓݖ৵͍ͯ͠ͳ͍͔ʁ
Pylint • Ϡό͍ॻ͖ํͯ͠Δͱڭ͑ͯ͘ΕΔ • ͘͢͝ྑ͍πʔϧ͚ͩͲӨ͕ബ͍ (ؾ͕͢Δ) $ pip install pylint
࣮ߦྫ • ઌ΄Ͳͷਓݖ৵શͯ Pylint Ͱर͑Δ $ pylint --disable=R,C overwrite.py No
config file found, using default configuration ************* Module overwrite W: 1, 0: Redefining built-in 'str' (redefined-builtin) …(লུ)
ͱ͜ΖͰɺਓݖ৵Λ ݟ͚ͭͨͱ͖Ͳ͏͢Εʁ
࣮ରॲํ๏͕ PEP8 ʹʂ single_trailing_underscore_: used by convention to avoid conflicts
with Python keyword, e.g. Tkinter.Toplevel(master, class_='ClassName') https://www.python.org/dev/peps/pep-0008/
ࣦΘΕͨਓݖΛऔΓͨ͠ྫ def max_(elements): … def f(id_, name): … str_ =
'Hello, World!'
·ͩ·ͩ͋ΔΑʂ • ศརͳ੩తղੳπʔϧͨͪ • pycodestyle (چ pep8 / ίʔσΟϯάελΠϧνΣοΧ) •
pydocstyle (چ pep257 / ίʔσΟϯάελΠϧνΣοΧ) • Flake8 (ϓϥΨϒϧͳઃܭͷ൚༻੩తίʔυղੳπʔϧ) • Radon (ίʔυͷෳࡶΛఆྔతʹଌఆ) • autopep8, yapf (ίʔυϑΥʔϚολ)
πʔϧΛ͏্ͰͷϙΠϯτ • ॏཁ: ࣗಈͰνΣοΫ͕࣮ߦ͞ΕΔΑ͏ʹ͢Δ • ΤσΟλͱ౷߹͢Δ • อଘ࣌ʹࣗಈͰνΣοΫ͞ΕΔͱ͔ • CI
ʹΈࠐΉ • ϓογϡ͢ΔͱࣗಈͰνΣοΫ͞ΕΔͱ͔
·ͱΊ • ੩తίʔυղੳπʔϧΛຯํʹ͚ͭΑ͏ • ਓݖ৵͕ى͖ͦ͏ͳͱ͖ޙΖʹ '_' ͚ͭΔ • ৭ʑͳ੩తղੳπʔϧ͕͋Δ •
ҙࣝ͠ͳͯ͘πʔϧ͕ΔΈ͕ॏཁ
͋Γ͕ͱ͏͍͟͝·ͨ͠