operator.__contains__(a, b) Return the outcome of the test b in a. Note the reversed operands.

operator.__imatmul__(a, b) a = imatmul(a, b) is equivalent to a @= b.

operator.__isub__(a, b) a = isub(a, b) is equivalent to a -= b.

operator.__lshift__(a, b) Return a shifted left by b.

operator.itruediv(a, b) operator.__itruediv__(a, b) a = itruediv(a, b) is equivalent to a /=

operator.__inv__(obj) operator.__invert__(obj) Return the bitwise inverse of the number obj. This is equivalent

operator.__rshift__(a, b) Return a shifted right by b.

partial.args The leftmost positional arguments that will be prepended to the positional arguments provided to a partial

functools.cmp_to_key(func) Transform an old-style comparison function to a key function

itertools.dropwhile(predicate, iterable) Make an iterator that drops elements from the iterable as long as the predicate is