#35426: `GenericPrefetch` should have `queryset` parameter as required
-------------------------------------+-------------------------------------
               Reporter:  Sobolev    |          Owner:  Sobolev Nikita
  Nikita                             |
                   Type:             |         Status:  assigned
  Uncategorized                      |
              Component:             |        Version:  5.0
  contrib.contenttypes               |
               Severity:  Normal     |       Keywords:
           Triage Stage:             |      Has patch:  0
  Unreviewed                         |
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  1
                  UI/UX:  0          |
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 Original issue: https://code.djangoproject.com/ticket/33651

 Source:
 
https://github.com/django/django/blob/91a4b9a8ec2237434f06866f39c7977e889aeae6/django/contrib/contenttypes/prefetch.py#L6-L7

 Right now this code is really strange. It produces this result:

 ```
 >>> import django
 >>> from django.contrib.contenttypes.prefetch import GenericPrefetch
 >>> GenericPrefetch('a')
 Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "/Users/sobolev/Documents/github/wemake-django-
 template/.venv/lib/python3.11/site-
 packages/django/contrib/contenttypes/prefetch.py", line 7, in __init__
     for queryset in querysets:
 TypeError: 'NoneType' object is not iterable
 ```

 I guess that there are two ways:
 - Using `if querysets is None: querysets = []`
 - Requiring this argument, which I guess is the correct thing to do. Why
 would we ever want this field to be empty?

 I will send a PR with the fix.

 I found this while working on https://github.com/typeddjango/django-
 stubs/pull/2115
-- 
Ticket URL: <https://code.djangoproject.com/ticket/35426>
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