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Jason NovingerM to Python@programming.dev • 2 months ago

Python Performance: Why 'if not list' is 2x Faster Than Using len()

blog.codingconfessions.com

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Python Performance: Why 'if not list' is 2x Faster Than Using len()

blog.codingconfessions.com

Jason NovingerM to Python@programming.dev • 2 months ago
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Discover why 'if not mylist' is twice as fast as 'len(mylist) == 0' by examining CPython's VM instructions and object memory access patterns.
  • 🇦🇺𝕄𝕦𝕟𝕥𝕖𝕕𝕔𝕣𝕠𝕔𝕠𝕕𝕚𝕝𝕖
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    1•2 months ago

    Ur function args if fucked up should always throw an error that’s the entire point of python type hints

    • @logging_strict@programming.dev
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      1•2 months ago

      type hints are static, not necessarily runtime.

      A chaos monkey throws everything at everything to see what breaks.

      That won’t be caught by perfect type hints, which is merely one tool in the toolbox.

      and when things break, often hear WAD, works as designed. Or some other nonsense excuse.

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