class Track:
    def print_result(self, name, start_time, end_time):
        time_delta = end_time - start_time
        result = '%r took: %2.4f sec' % (name, time_delta)
        print(result)

    def time(self, func):
        @wraps(func)
        def func_wrapper(*args, **kwargs):
            start_time = time.time()
            func_result = func(*args, **kwargs)
            self.print_result(func.__name__, start_time, time.time())
            return func_result
        return func_wrapper

    def partial(self, partial_name):
        _self = self

        class class_wrapper:
            def __enter__(self):
                self.start_time = time.time()
                return self

            def __exit__(self, type, value, traceback):
                _self.print_result(partial_name, self.start_time, time.time())

        return class_wrapper()

track = Track()