s = raw_input('[开始加密]please input your str:')
s = list(s)
n = 0
for sw in s:
s[n] = chr(ord(sw)+3)
n = n + 1
sout = ''
for sw2 in s:
sout = sout + sw2
print '[加密结果]：',sout解密的类似，主要用到ord、chr函数。
s = raw_input('[开始加密]please input your str:')
s = list(s)
n = 0
for sw in s:
s[n] = chr(ord(sw)+3)
n = n + 1
sout = ''
for sw2 in s:
sout = sout + sw2
print '[加密结果]：',sout解密的类似，主要用到ord、chr函数。
