from operator import itemgetter
-The :mod:`operator` module exports a set of functions corresponding to the
-intrinsic operators of Python. For example, ``operator.add(x, y)`` is
+The :mod:`operator` module exports a set of efficient functions corresponding to
+the intrinsic operators of Python. For example, ``operator.add(x, y)`` is
equivalent to the expression ``x+y``. The function names are those used for
special class methods; variants without leading and trailing ``__`` are also
provided for convenience.