#### Previous topic

numpy.core.defchararray.isdecimal

#### Next topic

numpy.core.defchararray.islower

# numpy.core.defchararray.isdigit

`numpy.core.defchararray.``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: | a : array_like of str or unicode
  Returns: | out : ndarray Output array of bools

  See also

  `str.isdigit`