文件操作 

fr = open ('plainText.txt',mode+'r'encoding='utf-8')
plainText = fr.read()
print('明文:'+plainText)
prin('密文：', end='')

fw = open('p.txt,mode='a', encoding='utf-8')
for c in plainText:
    print(chr(ord(c)+3),end='')
    fw.write(chr(ord(c)+3))

 

posted @ 2018-05-28 16:48  12z  阅读(105)  评论(0)  编辑  收藏  举报