python装饰器的wraps作用

不加：

from functools import wraps
def my_decorator(func):
    def wper(*args, **kwargs):
        '''decorator'''
        print('Calling decorated function...')
        return func(*args, **kwargs)
    return wper

@my_decorator
def example():
    """Docstring"""
    print('Called example function')

print(example.__name__, example.__doc__)#wper decorator

加：

from functools import wraps
def my_decorator(func):
    @wraps(func)
    def wper(*args, **kwargs):
        '''decorator'''
        print('Calling decorated function...')
        return func(*args, **kwargs)
    return wper

@my_decorator
def example():
    """Docstring"""
    print('Called example function')

print(example.__name__, example.__doc__)#example Docstring

装饰器修复技术