Allow manage.py changepassword to use DJANGO_SUPERUSER_PASSWORD

[johnthagen]

The createsuperuser admin command can use a DJANGO_SUPERUSER_PASSWORD environment variable to set the password. This is very useful for automated/unattended installations as well as running Django within Docker where it is simpler to pass data into the container using environment variables.

​https://docs.djangoproject.com/en/3.2/ref/django-admin/#createsuperuser

The changepassword admin command is used in a very similar way. It would be helpful if this command also provided a --no-input variant that would read from the DJANGO_SUPERUSER_PASSWORD environment variable and change a users password without interactively prompting for input.

​https://docs.djangoproject.com/en/3.2/ref/django-admin/#changepassword

[Mariusz Felisiak]

Thanks for this ticket, however I'm skeptical. We've already had doubts about using DJANGO_SUPERUSER_PASSWORD in the createsuperuser, see #27801. In the end we accepted #27801 because creating a new superuser can be complicated which is not the case in changing a password. You can create a custom command in your project or use a small standalone script:

UserModel = get_user_model()
user = UserModel._default_manager.db_manager('default').get(username=username)
user.set_password(new_password)

Please first start a discussion on the DevelopersMailingList, where you'll reach a wider audience and see what other think, and ​follow the guidelines with regards to requesting features.

[johnthagen]

Thank you for the script example. For those that use this as a reference, you will also need to add the following line to the end of the script from Mariusz Felisiak:

user.save()