实现一个函数出错重试的装饰器

装饰器

import functools


def retry_if_error(f):
    
    @functools.wraps(f)
    def inner(*args, **kwargs):
        remain_times = 3
        while remain_times > 0:
            try:
                return f(*args, **kwargs)
            except Exception as e:
                print(e)
                remain_times -= 1
            
        if remain_times <= 0:
            print("error")
    return inner

 示例：

@retry_if_error
def f_test(a):
    if a>=0:
        raise Exception("111")
    else:
        print(a)

调用这个函数

 

f_test(1)

# 结果
111
111
111
error