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This is documentation for an old release of NumPy (version 1.18). Read this page in the documentation of the latest stable release (version 2.2).

numpy.char.isdigit

numpy.char.isdigit(a)

Returns true for each element if all characters in the string are digits and there is at least one character, false otherwise.

Calls str.isdigit element-wise.

For 8-bit strings, this method is locale-dependent.

Parameters
aarray_like of str or unicode
Returns
outndarray

Output array of bools

See also

str.isdigit