函数执行时间计算装饰器

import time
from functools import wraps
def fn_timer(function):
    @wraps(function)
    def function_timer(*args, **kwargs):
        t0 = time.time()
        result = function(*args, **kwargs)
        t1 = time.time()
        print("\n函数[{}]运行时间: {} 秒\n".format(function.__name__, (t1 - t0)))
        return result
    return function_timer