PyClean

Bytecode is opcodes for the Python Virtual Machine. The *.pyc files and __pycache__ folders in your directory tree. On Debian there's pyclean to clean it all up when developing. We need to make this available on all platforms.

See the original presentation at https://slides.com/bittner/pyconx-pyclean/

Transcript

1. PyClean
   PyClean
   Clean up your Python bytecode & more.
   PyCon X, Firenze 2019
   PyCon X, Firenze 2019
   pip install pyclean
   

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2. PyClean
   PyClean
   installed on Debian via python-minimal
   pyclean
   py3clean
   pypyclean
   

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3. Bytecode
   Bytecode
   def foo(bar):
   print(bar)
   foo.__code__.co_code
   \x00\x00\x83\x01
   \x01\x00\x00\x00
   pip3 install pyclean
   

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4. Don't want this in my (Debian) package.
   pip3 install pyclean
   __pycache__/foo.pyc
   __pycache__/foo.pyc
   

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5. pip3 install pyclean
   python-defaults/pyclean (salsa.debian.org)
   python3-defaults/py3clean (salsa.debian.org)
   debian/scripts/pypyclean (salsa.debian.org)
   ⤋
   github.com/bittner/pyclean
   Debian, mother of things
   Debian, mother of things
   

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6. pip3 install pyclean
   python-defaults/pyclean (salsa.debian.org)
   python3-defaults/py3clean (salsa.debian.org)
   debian/scripts/pypyclean (salsa.debian.org)
   ⤋
   github.com/bittner/pyclean
   Debian, mother of things
   Debian, mother of things
   

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7. pip3 install pyclean
   python-defaults/pyclean (salsa.debian.org)
   python3-defaults/py3clean (salsa.debian.org)
   debian/scripts/pypyclean (salsa.debian.org)
   ⤋
   github.com/bittner/pyclean
   Debian, mother of things
   Debian, mother of things
   

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8. Clean Code, Clean Pkg
   Clean Code, Clean Pkg
   $ py3clean ­v .
   pip3 install pyclean
   

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9. pip3 install pyclean
   Code duplication
   Debian only + dependencies
   No PyPy3
   No tests
   Limited benefit
   What's broken?
   What's broken?
   

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10. How could we use it?
    How could we use it?
    tox # runs tests and cleans up afterwards
    # tox.ini
    [testenv:clean]
    commands =
    py3clean {toxinidir}
    find . ­name foo ­delete
    rm ­rf .pytest_cache/ .tox/ *.egg­info
    whitelist_externals =
    py3clean
    find
    rm
    

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11. How could we use it?
    How could we use it?
    tox # runs tests and cleans up afterwards
    # tox.ini
    [testenv:clean]
    commands =
    py3clean {toxinidir}
    find . ­name foo ­delete
    rm ­rf .pytest_cache/ .tox/ *.egg­info
    whitelist_externals =
    py3clean
    find
    rm
    # tox.ini
    [tox]
    envlist = py27,py37,clean
    [testenv]
    ...
    [testenv:clean]
    deps = pyclean
    commands = pyclean {toxinidir} ­­debris tox
    

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12. git clone https://github.com/bittner/pyclean
    Contributors wanted!
    Contributors wanted!
    

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13. Thank you!
    Thank you!
    for your precious time
    for your precious time
    Painless Software
    Painless Software
    Less pain, more fun.
    

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