Shoutbox

i'm trying to write a program to write a program to tailor putty session then launch in plink
i was using python and had

code:

---

for line in open(os.path.dirname(sys.argv[0])+'/sessions/base', 'rU'):
    if "ProxyPassword" in line:
        line = line.replace("ProxyPassword\\", "ProxyPassword\\" + listy[3] + chr(92)
       
                           
    if "ProxyUsername" in line:
        line = line.replace("ProxyUsername\\",  "ProxyUsername\\" + listy[2] + chr(92)

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and the end of the second if statement is some invalid syntax. how do i avoid it?
( i tried using double slashes but the result was the same)