python - Django how are filter parameter names named? -

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i'm following django tutorial here https://docs.djangoproject.com/en/1.8/intro/tutorial01/. i've come across filter , get functions. i'm confused why valid:

question.objects.get(pub_date__year=current_year)

i understand defined pub_date in question model, how did pub_date__year created?

basically, filter (and other django , python functions) can take number of arbitrarily named keyword arguments, or kwargs, , django parses these kwargs pass.

django defines functionality in models.queryset object. might interested in queryset source code.

see django documentation here, , referenced python documentation on functionality here.


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