制作文件备份
打开原文件
old_f_name = input(“请输入备份的文件路径:”)
old_f = open(old_f_name, “r”)
打开新文件
new_f_name = “[复件]” + old_f_name
123.txt -> 123[复件].txt 123 + “[复件]” + .txt
index = old_f_name.rfind(“.”) # 获取.对应的后缀
if index >= 0: # 如果有后缀
new_f_name = old_f_name[:index] + “[复件]” + old_f_name[index:]
else: # 如果没有后缀
new_f_name = old_f_name + “[复件]”
new_f = open(new_f_name, “w”)
读取原文件内容
content = old_f.read()
写入到新文件中
new_f.write(content)
关闭原文件
old_f.close()
关闭新文件
new_f.close()