Comment 7 for bug 1052754

So here in lines 951-2 of launchpad.py:

        for ch in tags.lower().encode('ASCII', errors='ignore'):
            if ch.isspace() or ch.isalpha() or ch.isdigit() or (len(res) > 0 and ch in b'+-.'):

The first line is creating ch as an int, according to the traceback. And the second line expects a string. I'm not pythony enough to have a quick fix yet. Thanks.