chararray.tofile(fid, sep="", format="%s") Write array to a file as text or binary (default). Data

RandomState.standard_normal(size=None) Draw samples from a standard Normal distribution (mean=0, stdev=1)

chararray.nonzero() Return the indices of the elements that are non-zero. Refer to

dtype.str The array-protocol typestring of this data-type object.

chararray.islower()

numpy.insert(arr, obj, values, axis=None)

class numpy.broadcast

numpy.ma.atleast_3d(*arys) = View inputs as arrays with at least three dimensions.

numpy.copyto(dst, src, casting='same_kind', where=None) Copies values from one array to another, broadcasting as necessary.

numpy.log(x[, out]) = Natural logarithm, element-wise. The natural logarithm