PyMOTW: functools

The functools module includes tools for wrapping functions and
other callable objects.

The primary tool supplied by the functools module is the class
partial, which can be used to “wrap” a callable with default
arguments. The resulting object is itself callable and can be treated
as though it is the original function. It takes all of the same
arguments as the original callable and can be invoked with extra
positional or named arguments as well.

Read more at pymotw.com: functools