计算路径文件大小及输出所有文件名

import os
def show_file(path):
    name_list=os.listdir(path)
    s=0
    for name in name_list:
        abs_path=os.path.join(path,name)
        if os.path.isfile(abs_path):
            print(abs_path)
            size= os.path.getsize(abs_path)
            s += size
        else:
            s += show_file(abs_path)
    return s
s1=input()
ret=show_file(s1)
print(ret)
print(ret/1024/1024)