Refs #23919 -- Removed most of remaining six usage

Thanks Tim Graham for the review.

3 files changed, 10 insertions, 13 deletions

diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index 37442c06c4..41733210c4 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -11,7 +11,6 @@ from django.db.models.sql.constants import (
 from django.db.models.sql.query import Query, get_order_dir
 from django.db.transaction import TransactionManagementError
 from django.db.utils import DatabaseError
-from django.utils.six.moves import zip
 
 FORCE = object()
 
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index 57ba7dfc8d..3acef8faf5 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -30,7 +30,6 @@ from django.db.models.sql.datastructures import (
 from django.db.models.sql.where import (
     AND, OR, ExtraWhere, NothingNode, WhereNode,
 )
-from django.utils import six
 from django.utils.encoding import force_text
 from django.utils.tree import Node
 
@@ -104,7 +103,7 @@ class RawQuery(object):
         if params_type is tuple:
             params = tuple(adapter(val) for val in self.params)
         elif params_type is dict:
-            params = dict((key, adapter(val)) for key, val in six.iteritems(self.params))
+            params = {key: adapter(val) for key, val in self.params.items()}
         else:
             raise RuntimeError("Unexpected params type: %s" % params_type)
 
@@ -665,23 +664,23 @@ class Query(object):
             # slight complexity here is handling fields that exist on parent
             # models.
             workset = {}
-            for model, values in six.iteritems(seen):
+            for model, values in seen.items():
                 for field in model._meta.fields:
                     if field in values:
                         continue
                     m = field.model._meta.concrete_model
                     add_to_dict(workset, m, field)
-            for model, values in six.iteritems(must_include):
+            for model, values in must_include.items():
                 # If we haven't included a model in workset, we don't add the
                 # corresponding must_include fields for that model, since an
                 # empty set means "include all fields". That's why there's no
                 # "else" branch here.
                 if model in workset:
                     workset[model].update(values)
-            for model, values in six.iteritems(workset):
+            for model, values in workset.items():
                 callback(target, model, values)
         else:
-            for model, values in six.iteritems(must_include):
+            for model, values in must_include.items():
                 if model in seen:
                     seen[model].update(values)
                 else:
@@ -695,7 +694,7 @@ class Query(object):
             for model in orig_opts.get_parent_list():
                 if model not in seen:
                     seen[model] = set()
-            for model, values in six.iteritems(seen):
+            for model, values in seen.items():
                 callback(target, model, values)
 
     def table_alias(self, table_name, create=False):
@@ -813,7 +812,7 @@ class Query(object):
                 (key, col.relabeled_clone(change_map)) for key, col in self._annotations.items())
 
         # 2. Rename the alias in the internal table/alias datastructures.
-        for old_alias, new_alias in six.iteritems(change_map):
+        for old_alias, new_alias in change_map.items():
             if old_alias not in self.alias_map:
                 continue
             alias_data = self.alias_map[old_alias].relabeled_clone(change_map)
@@ -1698,7 +1697,7 @@ class Query(object):
             self.group_by.append(col)
 
         if self.annotation_select:
-            for alias, annotation in six.iteritems(self.annotation_select):
+            for alias, annotation in self.annotation_select.items():
                 for col in annotation.get_group_by_cols():
                     self.group_by.append(col)
 
diff --git a/django/db/models/sql/subqueries.py b/django/db/models/sql/subqueries.py
index 089f04e04e..cfdadefdff 100644
--- a/django/db/models/sql/subqueries.py
+++ b/django/db/models/sql/subqueries.py
@@ -9,7 +9,6 @@ from django.db.models.sql.constants import (
     CURSOR, GET_ITERATOR_CHUNK_SIZE, NO_RESULTS,
 )
 from django.db.models.sql.query import Query
-from django.utils import six
 
 __all__ = ['DeleteQuery', 'UpdateQuery', 'InsertQuery', 'AggregateQuery']
 
@@ -120,7 +119,7 @@ class UpdateQuery(Query):
         querysets.
         """
         values_seq = []
-        for name, val in six.iteritems(values):
+        for name, val in values.items():
             field = self.get_meta().get_field(name)
             direct = not (field.auto_created and not field.concrete) or not field.concrete
             model = field.model._meta.concrete_model
@@ -164,7 +163,7 @@ class UpdateQuery(Query):
         if not self.related_updates:
             return []
         result = []
-        for model, values in six.iteritems(self.related_updates):
+        for model, values in self.related_updates.items():
             query = UpdateQuery(model)
             query.values = values
             if self.related_ids is not None: