NumPy
ufunc
numpy.ctypeslib
numpy.fft
numpy.linalg
numpy.matlib
numpy.random
numpy.testing
numpy.testing.overrides
numpy.typing
numpy.distutils
char.chararray.lower
method
Return an array with the elements of self converted to lowercase.
See also
char.lower
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numpy.char.chararray.ljust
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numpy.char.chararray.lstrip