Python Mechanize can no longer log into Amazon.com

[timur-tabi]

Starting a couple months ago, my Python Mechanize program stopped being able to log into Amazon.com. The web site responds with "Invalid username or password". Logging in via a web browser works fine. Even downloading the HTML login form, opening it in a web browser, and logging in that way also works. But for some reason, Mechanize just can't do it.

Apparently, the Perl version of Mechanize has the same problem: http://stackoverflow.com/questions/37409455/mechanize-perl-amazon-login-via-forms-unsuccessful

My script is here: https://github.com/timur-tabi/amazon-vine