文件的改

import os

with open('文件的改', encoding = 'utf-8', mode='r') as f1, \

　　open('文件改', encoding = 'utf-8', mode='w') as f2:

　　old_countent = f1.rend()

　　new_content = old_content.replace('英语', '中文')

　　f2.write(new_content)

os.remove('文件的改')

os.rename('文件改', '文件的改')