createsuperuser password error message has incorrect format

[Tzu-ping Chung]

$ ./manage.py createsuperuser
Username (leave blank to use 'uranusjr'): 
Email address: 
Password: 
Password (again): 
This password is too short. It must contain at least 8 characters., This password is too common.

The problem is likely in “django/contrib/auth/management/commands/createsuperuser.py”, where error message is currently formatted like this:

try:
    validate_password(password2, self.UserModel(**fake_user_data))
except exceptions.ValidationError as err:
    self.stderr.write(', '.join(err.messages))
    password = None

So either the exception message needs to be re-formatted to not using a complete sentence, or the messages need to be joined without the comma.

[Tim Graham]

It seems that joining with a newline could be appropriate.

[Tzu-ping Chung]

​Pull request created.

[Tim Graham <timograham@…>]

In 9581ac39:

[1.9.x] Fixed #25457 -- Improved formatting of password validation errors in management command output.

Backport of 7372cdebed19a9d8e5527823c1e6825156babf98 from master

[Tim Graham <timograham@…>]

In 7372cdeb:

Fixed #25457 -- Improved formatting of password validation errors in management command output.