Python Benchmark Decorator

from    time        import  time

class bench(object):
    __slots__ = (
      "_f",
      "_time",
      "__name__",
    )

    def __init__(self, f):
        self._f       = f
        self._time    = -1.

        self.__name__ = f.__name__

    def __call__(self, *args, **kwargs):
        _time       = time.time()
        _return     = self._f(*args, **kwargs)

        self._time  = time.time() - _time

        return _return

    def __repr__(self):
        return '<benchmarked function %s, %s, at %s>' % (
            self.__name__,
            round(self._time, 10),
            hex(id(self)),
        )

    @ property
    def time(self):
        return self._time

    @ property
    def wrapped(self):
        return self._f