文件操作 





fr = open('letter.txt',mode='r',encoding='utf-8')
plaincode = fr.read()
fr.close


fw = open('c_letter.txt',mode='a',encoding='utf-8')
for c in plaincode:
    fw.write(chr(ord(c)+3))
fw.close







    
posted on 
2018-05-30 20:50 
八达岭 
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