comprehensive password hashing framework

 Passlib is a password hashing library for Python 2 & 3, which provides
 cross-platform implementations of over 20 password hashing algorithms, as
 well as a framework for managing existing password hashes. It's designed to
 be useful for a wide range of tasks, from verifying a hash found in
 /etc/shadow, to providing full-strength password hashing for multi-user
 application.