24 lines
524 B
Python
24 lines
524 B
Python
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import re
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from typing import Match, Pattern
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def camel_to_snake(
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name: str, _re_snake: Pattern[str] = re.compile("[a-z][A-Z]")
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) -> str:
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"""Convert name from CamelCase to snake_case.
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Args:
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name: A symbol name, such as a class name.
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Returns:
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Name in snake case.
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"""
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def repl(match: Match[str]) -> str:
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lower: str
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upper: str
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lower, upper = match.group() # type: ignore
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return f"{lower}_{upper.lower()}"
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return _re_snake.sub(repl, name).lower()
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