Key Auto Increment Primary Python Django

In Django

1 : we have default field with name "id" which is auto increment.
2 : You can define a auto increment field using AutoField field as below.

EXAMPLE:
class Order(models.Model):
    auto_increment_id = models.AutoField(primary_key=True)
    #you use primary_key = True if you do not want to use default field "id" given by django to your model
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