请编写一个decorator,能在函数调用的前后打印出'begin call'和'end call'的日志。
from functools import wrapsdef mydecorator(func): @wraps(func) def wrapper(*args, **kwargs): print('Before call!') result = func(*args, **kwargs) print('After call!') return result return wrapper@mydecoratordef f(): print('Function called!')f()
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