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What is PEP 8?

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PEP 8 is the official style guide for Python code. It sets shared conventions so that code from different people looks the same. Its main rules are:

  • Indent with 4 spaces per level.
  • Keep lines to a maximum of 79 characters.
  • Name variables and functions in snake_case, classes in CapWords, and constants in UPPER_CASE.
  • Group imports in order: standard library, third-party packages, then your own modules.
  • Put single spaces around operators and after commas.
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