how to avoid inserting duplicate records in orm django

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Chelsea
11 Feb 2018
1for instance in Stock.objects.all():
2			if instance.category == category:
3				raise forms.ValidationError(str(category) + ' is already created')
4		return category
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Michele
29 Apr 2016
1if not table.objects.filter(column1=values).exists():
2    # Insert new data here
3    table.objects.create(column1=v1, column2=v2)
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