itertools.combinations_with_replacement(iterable, r) Return r length subsequences of elements from the input iterable

operator.indexOf(a, b) Return the index of the first of occurrence of b in a.

operator.__ilshift__(a, b) a = ilshift(a, b) is equivalent to a <<= b.

operator.and_(a, b) operator.__and__(a, b) Return the bitwise and of a and b.

operator.__le__(a, b) operator.__eq__(a, b) operator.__ne__(a, b) operator

operator.__getitem__(a, b) Return the value of a at index b.

@functools.total_ordering Given a class defining one or more rich comparison ordering methods, this class decorator supplies

operator.attrgetter(attr) operator.attrgetter(*attrs) Return a callable object that fetches attr from its

operator.truth(obj) Return

operator.__add__(a, b) Return a + b, for a and b numbers.