Fixed errors

Author: syrusakbary

graphql/pyutils/contain_subset.py

@@ -1,5 +1,6 @@
 obj = (dict, list, tuple)
 
+
 def contain_subset(expected, actual):
     t_actual = type(actual)
     t_expected = type(expected)
@@ -21,4 +22,4 @@ def contain_subset(expected, actual):
             continue
         if ao != eo:
             return False
-    return True
+    return True

graphql/type/schema.py

@@ -1,4 +1,5 @@
 from collections import OrderedDict
+from functools import reduce
 
 from ..utils.type_comparators import is_equal_type, is_type_sub_type_of
 from .definition import (GraphQLInputObjectType, GraphQLInterfaceType,