Python naming conventions in decorators

There are no standardized conventions (such as PEPs) for those names. If you check the python stdlib you’ll find lots of different names for those functions.

However, decorator is a rather common name for the decorator function inner.
It is also common to call your wrapped function wrapper and decorate it with functools.wraps(f) with f being the wrapped function (func is also a common name for it).

def decorator_name(whatevs):
    def decorator(f):
        @wraps(f)
        def wrapper(*args, **kwargs):
            pass # sweet decorator goodness
        return wrapper
    return decorator