PEP 8 in Python 3.12: writing readable match/case blocks
Python's match/case (3.10+) is powerful, but poorly indented it becomes hard to read. PEP 8 recommends indenting each case one level inside match, keeping lines
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Python's match/case (3.10+) is powerful, but poorly indented it becomes hard to read. PEP 8 recommends indenting each case one level inside match, keeping lines within 79 characters and using short if guards.
match command.split():
case ["go", direction] if direction in {"north", "south"}:
move(direction)
case ["quit" | "exit"]:
shutdown()
case _:
print("Comando desconocido")Quick rules
- One
caseper pattern; avoid guards with more than one condition. - Use
|to group alternatives instead of repeating branches. - Always end with
case _:so unexpected input is not silently ignored.
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View syntax error fix guide: How to fix IndentationError in Python 3.12