python全栈笔记-day05-file_operation

#文件操作-修改占硬盘

import os

name = '库里'
new_name = '咖喱仔'

f_name = '文件操作'
f_new_name = '%s.new'%f_name

f = open(f_name,'r')
f_new = open(f_new_name,'w')
for line in f:
    if name in line:
        line = line.replace(name,new_name)
    f_new.write(line)
f.close()
f_new.close()

# os.rename(f_new_name,f_name)这个方法会报错，好像是跨平台的问题
os.replace(f_new_name,f_name)