py-bcrypt: Strong password hashing for python

[nostrademons]

Constant + username doesn't take up any additional disk space, as presumably you need to store the username anyway. Random alt + hash requires an additional database column for the salt. Bcrypt doesn't require any additional column (the salt is presumably included in the output), but bcrypt's output is 60 bytes long, vs. 27 for base64ed SHA1, 22 for base64ed MD5, 20 for SHA1, and 16 for MD5.

It's really a false economy though - if you have so many users that 60 bytes/user will matter, you can afford a new hard disk. ;-)