import numpy as np
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from numpy import typing as npt
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class NAType:
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def __new__(cls, *args, **kwargs): ...
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NA: NAType
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def is_matching_na(
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left: object, right: object, nan_matches_none: bool = ...
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) -> bool: ...
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def isposinf_scalar(val: object) -> bool: ...
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def isneginf_scalar(val: object) -> bool: ...
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def checknull(val: object, inf_as_na: bool = ...) -> bool: ...
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def isnaobj(arr: np.ndarray, inf_as_na: bool = ...) -> npt.NDArray[np.bool_]: ...
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def is_numeric_na(values: np.ndarray) -> npt.NDArray[np.bool_]: ...
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def is_float_nan(values: np.ndarray) -> npt.NDArray[np.bool_]: ...
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