python - 尝试在 2 个文件之间切换文本

Question

from sys import argv

script, f1, f2 = argv

print """This program is going to switch the 
content of the two files you just selected."""

first_file = open(f1, 'r+')
first_content = first_file.read()


second_file = open(f2, 'r+')
second_content = second_file.read()


final_first = first_file.write(second_content)
final_second = second_file.write(first_content)

---

IOError: [Errno 0] 错误

---

我正在尝试同时在两个文本文件之间切换内容。想法？

Answer 1

您已到达 EOF(文件末尾)。

在写入之前尝试调用 first_file.seek(0,0) 和 second_file.seek(0, 0)

有更简单的方法来交换文件内容，例如通过重命名文件