CSH2012 LAB10 ROT13.py

#!/usr/bin/python
#lab10-rot13encoder.py  MrG 2013.0428
input = open("out-grinch.txt","r")
output = open("out2-grinch.txt","w")

encoded=""

for email in input:
    for i in range(len(email)):
        if (ord(email[i])>=97 and ord(email[i])<=122):
            encoded =  encoded + chr(((ord(email[i])+13)-97)%26+97)
        elif (ord(email[i])>=65 and ord(email[i])<=90):
            encoded =  encoded + chr(((ord(email[i])+13)-65)%26+65)
        else:
            encoded =  encoded + email[i]

output.write(encoded)

input.close()
output.close()