I'm using Python 3.6 while I have to fill in a form. Unfortunately, mechanize doesn't work on Python 3. What do you suggest as an alternative to mechanize?
SeleniumRC with selenium.py
is an alternative (and one of the few workable options if the pages you need to scrape have an important, "structural" role for Javascript operations, esp. AJAX-y ones, since Mechanize doesn't execute the Javascript on the pages it's scraping).