update query django code example

Example 1: django q objects

from django.db.models import Q

obj, created = Person.objects.filter(
    Q(first_name='Bob') | Q(first_name='Robert'),
).get_or_create(last_name='Marley', defaults={'first_name': 'Bob'})

Example 2: django delete object

SomeModel.objects.filter(id=id).delete()

Example 3: objects.filter django

>>> Entry.objects.filter(blog_id=4)

Example 4: create django object

Author.objects.create(name="Joe")

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