python实用函数

url = 'http://localhost.com'
# 拼接网址函数
def makeurl(*res):
    lst_res = list(res)
    for i in range(0,len(lst_res)):
        res = lst_res[i]
        if res.endswith('/') or res.startswith('/'):
           lst_res[i] == res.strip('/')
           
    lst_res.insert(0,url)
    return '/'.join(lst_res)
url = makeurl('ceshi','logins')

# 连接重试装饰器
def retry(exception=Timeout,max_times=3):
    def inner(func):
        def warp(*args,**kwargs):
            for try_time in range(max_times):
                try:
                    return func(*args,**kwargs)
                except exception as e:
                    if try_time == max_times -1:
                        raise e
                    time.sleep(3)
                    print('重试上一次请求')
                    continue
        return warp
    return inner

# 复制文件
def copy_file(source_file, des_file):
    """复制文件"""
    from shutil import copyfile
    import sys
    try:
        copyfile(source_file, des_file)
    except IOError as e:
        print("Unable to copy file. %s" % e)
        raise e
    except Exception as e:
        print("Unexpected error:", sys.exc_info())
        raise e
copy_file(source_file, des_file)