numpy.typing._nested_sequence._NestedSequence

Warning

_NestedSequence currently does not work in combination with typevars, e.g. def func(a: _NestedSequnce[T]) -> T: ....

See Also

collections.abc.Sequence

ABCs for read-only and mutable :term:`sequences`.

Examples

>>> from __future__ import annotations

>>> from typing import TYPE_CHECKING
>>> import numpy as np
>>> from numpy.typing import _NestedSequnce

>>> def get_dtype(seq: _NestedSequnce[float]) -> np.dtype[np.float64]:
...     return np.asarray(seq).dtype

>>> a = get_dtype([1.0])
>>> b = get_dtype([[1.0]])
>>> c = get_dtype([[[1.0]]])
>>> d = get_dtype([[[[1.0]]]])

>>> if TYPE_CHECKING:
...     reveal_locals()
...     # note: Revealed local types are:
...     # note:     a: numpy.dtype[numpy.floating[numpy.typing._64Bit]]
...     # note:     b: numpy.dtype[numpy.floating[numpy.typing._64Bit]]
...     # note:     c: numpy.dtype[numpy.floating[numpy.typing._64Bit]]
...     # note:     d: numpy.dtype[numpy.floating[numpy.typing._64Bit]]