Where are built-in methods of django model manager defined in source code?

By default, django model’s default manager objects has below built-in methods:

all(), filter(), exclude(), get(), create(), order_by()

But I did not find where are those methods defined in Django source code ?

>Solution :

Query methods are in db/models/query.py:

https://github.com/django/django/blob/main/django/db/models/query.py#L966