[Python] Does Django automatically recognize registration/login.html as the login template?

Does Django automatically recognize templates/registration/login.html as the login page? I'm working on a Django project and want to use Django's built-in authentication system for user login. I didn't set path to /login in urls.py but it's working on url/accounts/login/?next=/.

My question is:

1. Does Django automatically recognize registration/login.html as the default login template?
2. If so, how does Django determine this file's location?
3. Do I need to set anything in settings.py to make this work?
4. Where is written the logic for this built in login

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