numpy.tril_indices_from(arr, k=0)

numpy.putmask(a, mask, values) Changes elements of an array based on conditional and input values. Sets a.flat[n]

numpy.s_ = A nicer way to build up index tuples for arrays. Note

numpy.r_ = Translates slice objects to concatenation along the first axis. This is a simple way to build up arrays quickly. There

numpy.fill_diagonal(a, val, wrap=False)

numpy.c_ = Translates slice objects to concatenation along the second axis. This is short-hand for np.r_['-1,2,0', index

numpy.ogrid = nd_grid instance which returns an open multi-dimensional ?meshgrid?. An instance of numpy

nditer.next x.next() -> the next value, or raise StopIteration

class numpy.lib.Arrayterator(var, buf_size=None)

numpy.put(a, ind, v, mode='raise')