'''

函数嵌套函数

def print_name(name):

return 'fuck, ' + name

def add_symbol(func1):

def prt_func(name):

return '&&&{0}&&&'.format(func1(name))

return prt_func

if __name__ == "__main__":

hell = add_symbol(print_name)

print(hell('world'))

'''

# 无参数装饰器

def add_symbol(func1):

def prt_func(name):

return '&&&{0}&&&'.format(func1(name))

return prt_func

@add_symbol

def print_name(name):

return 'fuck, ' + name

# 这样与上面的函数嵌套函数效果一致，就是将函数和字符串都

# 都作为参数传递给装饰器了

# 带参数的装饰器

def add_symbol(symbol):

def decorator(func1):

def prt_func(name):

return '{0}&&&{1}&&&{0}'.format(symbol, func1(name))

return prt_func

return decorator

@add_symbol('$$')

def print_name(name):

return 'fuck, ' + name

if __name__ == "__main__":

print (print_name('world'))

print(print_name.__name__)

# 装饰器覆写了print_name的__name__, __doc__, __modual__三个属性

# 如何改回来

'''

from functools import wrap

def add_symbol(symbol):

def decorator(func1):

@wrap(func)

def prt_func(name):

return '{0}&&&{1}&&&{0}'.format(symbol, func1(name))

return prt_func

return decorator

print(print_name('world'))

结果： print_name

'''