attribute
Data-type of the array’s elements.
Warning
Setting arr.dtype is discouraged and may be deprecated in the future. Setting will replace the dtype without modifying the memory (see also ndarray.view and ndarray.astype).
See also
ndarray.astypeCast the values contained in the array to a new data-type.
ndarray.viewCreate a view of the same data but a different data-type.
numpy.dtype>>> import numpy as np
>>> x = np.arange(4).reshape((2, 2))
>>> x
array([[0, 1],
[2, 3]])
>>> x.dtype
dtype('int64') # may vary (OS, bitness)
>>> isinstance(x.dtype, np.dtype)
True
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https://numpy.org/doc/2.4/reference/generated/numpy.char.chararray.dtype.html