Not a std lib in Python, but Django has nice API as well for saving the password [0].

    from django.contrib.auth.models import User
    u = User.objects.get(username='john')
    u.set_password('new password')
    u.save()

And here is the code which does all the magic - [1]. You can also generate nice passwords [2], use many available different hashers [3] Or write your own [4]

[0] - https://docs.djangoproject.com/en/dev/topics/auth/default/#c...

[1] - https://github.com/django/django/blob/stable/1.10.x/django/c... and https://github.com/django/django/blob/stable/1.10.x/django/c...

[2] - https://docs.djangoproject.com/en/dev/topics/auth/customizin...

[3] - https://docs.djangoproject.com/en/dev/topics/auth/passwords/...

[4] - https://docs.djangoproject.com/en/dev/topics/auth/passwords/...