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33 lines
934 B
33 lines
934 B
import enum
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from typing import Sequence, Type, TypeVar
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T = TypeVar("T", bound=enum.Enum)
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class StrEnumMeta(enum.EnumMeta):
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auto = enum.auto
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def from_str(self: Type[T], member: str) -> T: # type: ignore[misc]
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try:
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return self[member]
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except KeyError:
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# TODO: use `add_suggestion` from torchvision.prototype.utils._internal to improve the error message as
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# soon as it is migrated.
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raise ValueError(f"Unknown value '{member}' for {self.__name__}.") from None
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class StrEnum(enum.Enum, metaclass=StrEnumMeta):
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pass
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def sequence_to_str(seq: Sequence, separate_last: str = "") -> str:
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if not seq:
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return ""
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if len(seq) == 1:
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return f"'{seq[0]}'"
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head = "'" + "', '".join([str(item) for item in seq[:-1]]) + "'"
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tail = f"{'' if separate_last and len(seq) == 2 else ','} {separate_last}'{seq[-1]}'"
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return head + tail
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