(venv) E:\PythonProjects\djanfo_rest>python manage.py createsuperuser Username (leave blank to use 'xuqin'): xuqm Error: That username is already taken. Username (leave blank to use 'xuqin'): admin Email address: 123456 Error: Enter a valid email address. Email address: xuqinmin12@sina.com Password: Password (again): This password is too short. It must contain at least 8 characters. This password is too common. This password is entirely numeric. Bypass password validation and create user anyway? [y/N]: y Superuser created successfully.