ufunc
numpy.ctypeslib
numpy.dual
numpy.fft
numpy.linalg
numpy.matlib
numpy.random
numpy.testing
numpy.typing
numpy.distutils
method
For each element in self, return a copy of the string with uppercase characters converted to lowercase and vice versa.
See also
char.swapcase
previous
numpy.char.chararray.swapaxes
next
numpy.char.chararray.take