numpy.char.lower

char.lower(a)

Return an array with the elements converted to lowercase.

Call str.lower element-wise.

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

Parameters:

aarray-like, with StringDType, bytes_, or str_ dtype

Input array.

Returns:

outndarray

Output array of StringDType, bytes_ or str_ dtype, depending on input types

See also

str.lower

Examples

>>> import numpy as np
>>> c = np.array(['A1B C', '1BCA', 'BCA1']); c
array(['A1B C', '1BCA', 'BCA1'], dtype='<U5')
>>> np.strings.lower(c)
array(['a1b c', '1bca', 'bca1'], dtype='<U5')