Fixed Flake8 issues

graphene/types/inputobjecttype.py

@@ -9,7 +9,7 @@ from .utils import yank_fields_from_attrs
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from typing import Dict, Callable
+    from typing import Dict, Callable  # NOQA
 
 
 class InputObjectTypeOptions(BaseOptions):

graphene/types/interface.py

@@ -7,7 +7,7 @@ from .utils import yank_fields_from_attrs
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from typing import Dict
+    from typing import Dict  # NOQA
 
 
 class InterfaceOptions(BaseOptions):

graphene/types/mutation.py

@@ -11,8 +11,8 @@ from ..utils.deprecated import warn_deprecation
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from .argument import Argument
-    from typing import Dict, Type, Callable
+    from .argument import Argument  # NOQA
+    from typing import Dict, Type, Callable  # NOQA
 
 
 class MutationOptions(ObjectTypeOptions):

graphene/types/objecttype.py

@@ -8,7 +8,7 @@ from .utils import yank_fields_from_attrs
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from typing import Dict, Iterable, Type
+    from typing import Dict, Iterable, Type  # NOQA
 
 
 class ObjectTypeOptions(BaseOptions):

graphene/types/union.py

@@ -5,8 +5,8 @@ from .unmountedtype import UnmountedType
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from .objecttype import ObjectType
-    from typing import Iterable, Type
+    from .objecttype import ObjectType  # NOQA
+    from typing import Iterable, Type  # NOQA
 
 
 class UnionOptions(BaseOptions):
@@ -42,6 +42,6 @@ class Union(UnmountedType, BaseType):
 
     @classmethod
     def resolve_type(cls, instance, info):
-        from .objecttype import ObjectType
+        from .objecttype import ObjectType  # NOQA
         if isinstance(instance, ObjectType):
             return type(instance)