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numpy.core.defchararray.chararray.swapcase

method

chararray.swapcase() [source]

For each element in self, return a copy of the string with uppercase characters converted to lowercase and vice versa.

See also

char.swapcase

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https://docs.scipy.org/doc/numpy-1.16.1/reference/generated/numpy.core.defchararray.chararray.swapcase.html