how to delete except 1 field in django code example

Example 1: django get item by id

obj = Class.objects.get(pk=this_object_id)

Example 2: django 3.0 queryset examples

>>> Entry.objects.filter(
...     headline__startswith='What'
... ).exclude(
...     pub_date__gte=datetime.date.today()
... ).filter(
...     pub_date__gte=datetime.date(2005, 1, 30)
... )

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