Fixed "redefinition of unused 'foo' from line X" pyflakes warnings.

def user_model_swapped(**kwargs):

    if kwargs['setting'] == 'AUTH_USER_MODEL':

        from django.db.models.manager import ensure_default_manager

        from django.contrib.auth.models import User

        # Reset User manager

        setattr(User, 'objects', User._default_manager)

        ensure_default_manager(User)

from django.contrib.gis.geos.prototypes.predicates import (geos_hasz, geos_isempty,

    geos_isring, geos_issimple, geos_isvalid, geos_contains, geos_crosses,

    geos_disjoint, geos_equals, geos_equalsexact, geos_intersects,

    geos_intersects, geos_overlaps, geos_relatepattern, geos_touches, geos_within)

    geos_overlaps, geos_relatepattern, geos_touches, geos_within)

# Topology routines

from django.contrib.gis.geos.prototypes.topology import *

    if sitemap_url is None:

        raise SitemapNotFound("You didn't provide a sitemap_url, and the sitemap URL couldn't be auto-detected.")

    from django.contrib.sites.models import Site

    current_site = Site.objects.get_current()

    url = "http://%s%s" % (current_site.domain, sitemap_url)

    params = urlencode({'sitemap':url})

from django.db.backends.mysql.validation import DatabaseValidation

from django.utils.encoding import force_str, force_text

from django.db.backends.mysql.schema import DatabaseSchemaEditor

from django.utils.encoding import force_str

from django.utils.functional import cached_property

from django.utils.safestring import SafeBytes, SafeText

from django.utils import six

    @classmethod

    def from_app_cache(cls, app_cache):

        "Takes in an AppCache and returns a ProjectState matching it"

        models = {}

        app_models = {}

        for model in app_cache.get_models():

            model_state = ModelState.from_model(model)

            models[(model_state.app_label, model_state.name.lower())] = model_state

        return cls(models)

            app_models[(model_state.app_label, model_state.name.lower())] = model_state

        return cls(app_models)

    def __eq__(self, other):

        if set(self.models.keys()) != set(other.models.keys()):