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# numpy.core.defchararray.islower

`numpy.core.defchararray.``islower`(a)

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

  Calls str.islower 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.islower`