标签：odi art foo pre 辅助 one exp script *args
python允许将方法当作参数传递
开放封闭原则
装饰器是函数，只不过该函数可以具有特殊的含义，装饰器用来装饰函数或类，使用装饰器可以在函数执行前和执行后添加相应操作。
def wrapper(func):
def result():
print ‘before‘
func()
print ‘after‘
return result
@wrapper
def foo():
print ‘foo‘
def outer(func): def inner(*args,**kwargs): print("你蛮大爷我来了") print(kwargs) r = func(*args,**kwargs) print(kwargs) print("刀妹") return r return inner @outer def index(*args, **kwargs): print("安妮") return "lalal" index(1, **{"a":"b"})
#++++++++++++++++++++++++++++++++++ def outer_jia(func): def inner1(*args, **kwargs): print("懒辅助") r1 = func(*args, **kwargs) return r1 return inner1 def outer(func): def inner(*args,**kwargs): print("我是你蛮大爷") r = func(*args, **kwargs) print("我是你上单刀奶奶") return r return inner @outer_jia @outer def index(a1, a2): print("烈焰天使.彦") index(1,2)
import functools def wrapper(func): @functools.wraps(func) def wrapper(): print ‘before‘ func() print ‘after‘ return wrapper @wrapper def foo(): print ‘foo‘
#!/usr/bin/env python #coding:utf-8 def Before(request,kargs): print ‘before‘ def After(request,kargs): print ‘after‘ def Filter(before_func,after_func): def outer(main_func): def wrapper(request,kargs): before_result = before_func(request,kargs) if(before_result != None): return before_result; main_result = main_func(request,kargs) if(main_result != None): return main_result; after_result = after_func(request,kargs) if(after_result != None): return after_result; return wrapper return outer @Filter(Before, After) def Index(request,kargs): print ‘index‘ if __name__ == ‘__main__‘: Index(1,2)
标签：odi art foo pre 辅助 one exp script *args
原文地址：http://www.cnblogs.com/renfanzi/p/5777768.html
