Fixed #20989 -- Removed explicit list comprehension inside dict() and tuple()

Thanks jeroen.pulles at redslider.net for the suggestion and
helper script.

1 files changed, 2 insertions, 2 deletions

diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index 6c8b850c84..5dda379236 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -437,7 +437,7 @@ class SQLCompiler(object):
             # Firstly, avoid infinite loops.
             if not already_seen:
                 already_seen = set()
-            join_tuple = tuple([self.query.alias_map[j].table_name for j in joins])
+            join_tuple = tuple(self.query.alias_map[j].table_name for j in joins)
             if join_tuple in already_seen:
                 raise FieldError('Infinite loop caused by ordering.')
             already_seen.add(join_tuple)
@@ -866,7 +866,7 @@ class SQLInsertCompiler(SQLCompiler):
             return [(" ".join(result), tuple(params))]
         if can_bulk:
             result.append(self.connection.ops.bulk_insert_sql(fields, len(values)))
-            return [(" ".join(result), tuple([v for val in values for v in val]))]
+            return [(" ".join(result), tuple(v for val in values for v in val))]
         else:
             return [
                 (" ".join(result + ["VALUES (%s)" % ", ".join(p)]), vals)