DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.sqlite3',
    'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
},
'legacy_db': {
    'ENGINE': 'django.db.backends.mysql',
    'NAME': 'name',
    'USER': 'user',
    'PASSWORD': 'pass',
    'HOST': 'host',
    'PORT': '3306',
}

python manage.py inspectdb --database legacy_db > models.py

from django.db import models


class User(models.Model):
    username = models.CharField(max_length=16)
    email = models.CharField(max_length=255, blank=True, null=True)
    password = models.CharField(max_length=32)
    create_time = models.DateTimeField(blank=True, null=True)
    id = models.IntegerField(primary_key=True)

    def __str__(self):
        return self.username

    class Meta:
        managed = False
        db_table = 'user'

all = User.objects.all()

all: unable to get repr for <class 'django.db.models.query.QuerySet'>