numpy.strings.swapcase#

strings.swapcase(a)[source]#

Return element-wise a copy of the string with uppercase characters converted to lowercase and vice versa.

Calls str.swapcase 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.swapcase

Examples

>>> import numpy as np
>>> c=np.array(['a1B c','1b Ca','b Ca1','cA1b'],'S5'); c
array(['a1B c', '1b Ca', 'b Ca1', 'cA1b'],
    dtype='|S5')
>>> np.strings.swapcase(c)
array(['A1b C', '1B cA', 'B cA1', 'Ca1B'],
    dtype='|S5')