I would like to generate Python Expect (pexpect) code automatically, does something like autoexpect exist for pexpect?
Not really, AFAIK, but you could use expy AKA expectpy, rather than pexpect, if you depend on autoexpect's functionality. There's nothing conceptually standing in the way of implementing a pyautoexpect -- it's just that, as far as I know, nobody's taken the trouble of doing it (since I've never felt a need for autoexpect myself, I'm not really surprised;-).