numpy.core.defchararray.swapcase

numpy.core.defchararray.swapcase(a)[源代码]

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:
a : array_like, {str, unicode}

Input array.

Returns:
out : ndarray, {str, unicode}

Output array of str or unicode, depending on input type

参见

str.swapcase

Examples

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