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Python from your first script to code you can maintain. Start here if you have never programmed.

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Adding mypy to an Existing Python Project Without 500 Errors on Day One

Start mypy with its defaults, fix what it finds, turn on check_untyped_defs, then make one module at a time strict. Every function you annotate checks every place that calls it, so start with the busiest ones.

6 min read