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- import re
- def to_snake_case(class_name: str) -> str:
- """Converts class name to snake case.
- This is used to unify metrics names when using class names within.
- Args:
- class_name: A string defining a class name usually in camel
- case.
- Returns:
- The class name in snake case.
- """
- # Insert _ between a lower- or digit-char and an upper-char
- name = re.sub(r"(?<=[a-z0-9])(?=[A-Z])", "_", class_name)
- # Insert _ between an upper-char followed by upper+lower (to split
- # "ABCReward" into "abc_reward")
- name = re.sub(r"(?<=[A-Z])(?=[A-Z][a-z])", "_", name)
- return name.lower()
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