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import sys
from typing import TypeVar, Union, Iterable, overload
from numpy import ndarray
from numpy.typing import ArrayLike, DTypeLike
if sys.version_info >= (3, 8):
from typing import Literal
else:
from typing_extensions import Literal
_ArrayType = TypeVar("_ArrayType", bound=ndarray)
_Requirements = Literal[
"C", "C_CONTIGUOUS", "CONTIGUOUS",
"F", "F_CONTIGUOUS", "FORTRAN",
"A", "ALIGNED",
"W", "WRITEABLE",
"O", "OWNDATA"
]
_E = Literal["E", "ENSUREARRAY"]
_RequirementsWithE = Union[_Requirements, _E]
@overload
def require(
a: _ArrayType,
dtype: None = ...,
requirements: Union[None, _Requirements, Iterable[_Requirements]] = ...,
*,
like: ArrayLike = ...
) -> _ArrayType: ...
@overload
def require(
a: object,
dtype: DTypeLike = ...,
requirements: Union[_E, Iterable[_RequirementsWithE]] = ...,
*,
like: ArrayLike = ...
) -> ndarray: ...
@overload
def require(
a: object,
dtype: DTypeLike = ...,
requirements: Union[None, _Requirements, Iterable[_Requirements]] = ...,
*,
like: ArrayLike = ...
) -> ndarray: ...
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