I'm not sure that this is exactly what you want, but anyway:
d = dict(tweets=tweetlist, users=userlist)pandas.DataFrame({k : pandas.Series(v) for k, v in d.iteritems()})
Try this:
frame = pandas.DataFrame.from_dict(d, orient='index')
After that, you should transpose your frame with:
frame = frame.transpose()
Then you can export to csv:
frame.to_csv('#parsed.csv', index=False)