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Danny5487401
advanced_python_code
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chapter12_callback
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02_decorator.py
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02_decorator.py
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# 装饰器
"""
业务逻辑:登录之后才能评论
"""
# 定义装饰器
def decorator(func):
def inner():
# 在内部函数里面对已有函数进行装饰
print('已添加登录认证')
func()
return inner
def comment():
print('发表评论')
# 调用装饰器对已有函数进行装饰,左边的comment=inner
comment = decorator(comment)
# 调用方式不变
comment()
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