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numpy.char.isalnum
- numpy.char.isalnum(a)
- 
    Returns true for each element if all characters in the string are alphanumeric and there is at least one character, false otherwise. Calls str.isalnumelement-wise.For 8-bit strings, this method is locale-dependent. - Parameters
- 
      - aarray_like of str or unicode
 
- Returns
- 
      - outndarray
- 
        Output array of str or unicode, depending on input type 
 
 See also 
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 https://numpy.org/doc/1.19/reference/generated/numpy.char.isalnum.html