strings.lower(a)
Return an array with the elements converted to lowercase.
Call
element-wise.
For 8-bit strings, this method is locale-dependent.
Parameters:aarray-like, with StringDType, bytes_, or str_ dtypeInput array.
Returns:outndarrayOutput array of StringDType, bytes_ or str_ dtype, depending on input types
Examples
>>> importnumpyasnp>>> c=np.array(['A1B C','1BCA','BCA1']);carray(['A1B C', '1BCA', 'BCA1'], dtype='<U5')>>> np.strings.lower(c)array(['a1b c', '1bca', 'bca1'], dtype='<U5')