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base.py
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31 lines (20 loc) · 600 Bytes
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from python_utils import types
class FalseMeta(type):
@classmethod
def __bool__(cls): # pragma: no cover
return False
@classmethod
def __cmp__(cls, other): # pragma: no cover
return -1
__nonzero__ = __bool__
class UnknownLength(metaclass=FalseMeta):
pass
class Undefined(metaclass=FalseMeta):
pass
try: # pragma: no cover
IO = types.IO # type: ignore
TextIO = types.TextIO # type: ignore
except AttributeError: # pragma: no cover
from typing.io import IO, TextIO # type: ignore
assert IO is not None
assert TextIO is not None