Update utils.py

[haradhansharma]

More straight forward parser consumes

[JoelLefkowitz]

Hey @haradhansharma could you please clarify the details of this commit?

The return type of the function is a list:

media_types = [parser.media_type for parser in parser_classes or []]
non_form_media_types = [encoding for encoding in media_types if not is_form_media_type(encoding)]

if len(non_form_media_types) == 0:
    return media_types

return non_form_media_types

But this expression may be an individual object:

return [media_types[0]]

Also media_types can be empty, so we can't index it without accounting for that.

I agree that we can drop the or [] in the media_types expression because parser_classes is guaranteed to be a list