Use `as error` form of the exception for Python3 compatibility.
Use `as error` form of the exception for Python3 compatibility.

Using `except (TokenRequestDenied, AccountLocked, LoginPasswordError, WrongAuthorizationResponseUrl) as e:` instead of `except (TokenRequestDenied, AccountLocked, LoginPasswordError, WrongAuthorizationResponseUrl), e:` makes the library usable for python3.
ramusus/django-oauth-tokens