Probably for adding other arguments later without braking function signature? 
I'm with you on this one, though. Using kwargs everywhere it's possible really 
helps developing using Django. Maybe this is a subject for 
django-develop...@googlegroups.com. 

> On 15 Dec 2016, at 15:39, Alexey Gerasimov <lokomot...@gmail.com> wrote:
> 
> 
> Why "flat" keyword is accepted that way? Why not just as def 
> values_list(self, *fields, flat=False)? Because of that I cannot have support 
> in my IDE (autocomplete)
> 
> def values_list(self, *fields, **kwargs):
>         flat = kwargs.pop('flat', False)
>         if kwargs:
>             raise TypeError('Unexpected keyword arguments to values_list: %s' 
> % (list(kwargs),))
> 
>         if flat and len(fields) > 1:
>            raise TypeError("'flat' is not valid when values_list is called 
> with more than one field.")
> 
>         _fields = []
>         expressions = {}
> 
>         for field in fields:
>            if hasattr(field, 'resolve_expression'):
>                field_id = str(id(field))
>                expressions[field_id] = field
>                _fields.append(field_id)
>            else:
>                _fields.append(field)
>    
>         clone = self._values(*_fields, **expressions)
>         clone._iterable_class = FlatValuesListIterable if flat else 
> ValuesListIterable
>         return clone
> 
> 
> 
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