python
课后作业035import easygui as g
import os
file_path = g.fileopenbox(default="*.txt")
with open(file_path) as old_file:
title = os.path.basename(file_path)
msg = "文件【%s】的内容如下：" % title
text = old_file.read()
text_after = g.textbox(msg, title, text)
if text != text_after[:-1]:
# textbox 的返回值会追加一个换行符
choice = g.buttonbox("检测到文件内容发生改变，请选择以下操作：", "警告", ("覆盖保存", "放弃保存", "另存为..."))
if choice == "覆盖保存":
with open(file_path, "w") as old_file:
old_file.write(text_after[:-1])
if choice == "放弃保存":
pass
if choice == "另存为...":
another_path = g.filesavebox(default=".txt")
if os.path.splitext(another_path) != '.txt':
another_path += '.txt'
with open(another_path, "w") as new_file:
new_file.write(text_after[:-1])
请问代码里面的if os.path.splitext(another_path) != '.txt':
another_path += '.txt'什么意思呀。。。如果后缀不是txt，再加上一个txt，那不就有两个后缀了嘛
不是的，Windows只会看最后面的一个后缀，并把它当作最终的后缀名
虽然文件名有两个后缀 a.txt.txt是txt文件
a.py.txt也是txt文件
系统会把a.py当做主文件名txt才是后缀名
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