chararray.repeat(repeats, axis=None) Repeat elements of an array. Refer to

numpy.ediff1d(ary, to_end=None, to_begin=None)

MaskedArray.swapaxes(axis1, axis2)

numpy.polynomial.legendre.legval(x, c, tensor=True)

chararray.isupper()

Laguerre.cutdeg(deg)

numpy.piecewise(x, condlist, funclist, *args, **kw)

numpy.core.records.fromstring(datastring, dtype=None, shape=None, offset=0, formats=None, names=None, titles=None, aligned=False,

chararray.index(sub, start=0, end=None)

numpy.core.defchararray.isdigit(a)