exsist in django code example
Example 1: django filter exsist
if table.objects.filter(prop='value').count() > 0:
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)
... )