python多个装饰器嵌套
2022/1/6 22:03:26
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#_*_ encoding: utf-8 _*_ def wrapper1(f1): # print('in wrapper1') def inner1(*args,**kwargs): print('in inner1') ret = f1(*args,**kwargs) print('111') return ret return inner1 def wrapper2(f2): # print('in wrapper2') def inner2(*args,**kwargs): print('in inner2') ret = f2(*args,**kwargs) print('222') return ret return inner2 def wrapper3(f3): # print('in wrapper3') def inner3(*args,**kwargs): print('in inner3') ret = f3(*args,**kwargs) print('333') return ret return inner3 @wrapper1 #3 func = wrapper1(func) func = wrapper2(inner2) -->f1 = inner2 -->print in wrapper1 --> func = inner1 @wrapper2 #2 func = wrapper2(func) func = wrapper2(inner3) -->f2 = inner3 --> print in wrapper2 --> func = inner2 @wrapper3 #1 func = wrapper3(func) --> f3 = func -->print in wrapper3 --> func = inner3 def func(): # first print('in func') func() #4 func = inner1
输出:
in inner1 in inner2 in inner3 in func 333 222 111
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