Is a Python Decorator the same as Java annotation, or Java with Aspects?

Question

Are Python Decorators the same or similar, or fundamentally different to Java annotations or something like Spring AOP, or Aspect J?

Answer 1

I use both of them in a similar way: to turn on/off debugging or testing options.

For example (Python decorators):

def measure_time(func):
    def _measure_time(*args, **kwargs):
        t0 = time.time()
        ret = func(*args, **kwargs)
        print "time=%lf" % (time.time()-t0)
        ...
        return ret
    return _measure_time


@measure_time
def train_model(self):
    ...

For Java annotations, use getAnnotation, etc. can do the similar jobs or more complicated ones.