Get entry by week number using Django ORM?

I tried something like:

MyModel.objects.filter(year__week=1)

It doesn't work. For now, I 开发者_StackOverflow中文版calculate the first day and the last day of the week and then use gte and lte, but it's less than efficient given that SQL comes with a Week function.

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It seems that django DateField doesn't have week attribute, as weel as date object from Python. They have both year and month and also day, but not week attribute. I guess you need to translate week to day range and file a ticket on django website ;-)