operator.lt(a, b) operator.le(a, b) operator.eq(a, b) operator

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

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

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

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

operator.__gt__(a, b) Perform “rich comparisons” between a and b. Specifically, lt(a, b) is equivalent

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

operator.__neg__(obj) Return obj negated (-obj).

itertools.groupby(iterable, key=None) Make an iterator that returns consecutive keys and groups from the iterable.

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