diff --git a/examples/starwars/data.py b/examples/starwars/data.py
index 6c68b85c..c374b713 100644
--- a/examples/starwars/data.py
+++ b/examples/starwars/data.py
@@ -3,7 +3,7 @@ droid_data = {}
 
 
 def setup():
-    from .schema import Human, Droid
+    from .schema import Droid, Human
 
     global human_data, droid_data
     luke = Human(
diff --git a/examples/starwars_relay/data.py b/examples/starwars_relay/data.py
index 0ed654c2..ab3dc475 100644
--- a/examples/starwars_relay/data.py
+++ b/examples/starwars_relay/data.py
@@ -4,7 +4,7 @@ data = {}
 def setup():
     global data
 
-    from .schema import Ship, Faction
+    from .schema import Faction, Ship
 
     xwing = Ship(id="1", name="X-Wing")
 
diff --git a/examples/starwars_relay/tests/snapshots/snap_test_objectidentification.py b/examples/starwars_relay/tests/snapshots/snap_test_objectidentification.py
index 7bce5ba3..7462e104 100644
--- a/examples/starwars_relay/tests/snapshots/snap_test_objectidentification.py
+++ b/examples/starwars_relay/tests/snapshots/snap_test_objectidentification.py
@@ -4,7 +4,6 @@ from __future__ import unicode_literals
 
 from snapshottest import Snapshot
 
-
 snapshots = Snapshot()
 
 snapshots["test_correctly_fetches_id_name_rebels 1"] = {
diff --git a/graphene/__init__.py b/graphene/__init__.py
index 88212871..9b10a398 100644
--- a/graphene/__init__.py
+++ b/graphene/__init__.py
@@ -1,43 +1,11 @@
 from .pyutils.version import get_version
-from .relay import (
-    ClientIDMutation,
-    Connection,
-    ConnectionField,
-    GlobalID,
-    Node,
-    PageInfo,
-    is_node,
-)
-from .types import (
-    ID,
-    UUID,
-    Argument,
-    Base64,
-    Boolean,
-    Context,
-    Date,
-    DateTime,
-    Decimal,
-    Dynamic,
-    Enum,
-    Field,
-    Float,
-    InputField,
-    InputObjectType,
-    Int,
-    Interface,
-    JSONString,
-    List,
-    Mutation,
-    NonNull,
-    ObjectType,
-    ResolveInfo,
-    Scalar,
-    Schema,
-    String,
-    Time,
-    Union,
-)
+from .relay import (ClientIDMutation, Connection, ConnectionField, GlobalID,
+                    Node, PageInfo, is_node)
+from .types import (ID, UUID, Argument, Base64, Boolean, Context, Date,
+                    DateTime, Decimal, Dynamic, Enum, Field, Float, InputField,
+                    InputObjectType, Int, Interface, JSONString, List,
+                    Mutation, NonNull, ObjectType, ResolveInfo, Scalar, Schema,
+                    String, Time, Union)
 from .utils.module_loading import lazy_import
 from .utils.resolve_only_args import resolve_only_args
 
diff --git a/graphene/pyutils/dataclasses.py b/graphene/pyutils/dataclasses.py
index 19530eff..df1ef82d 100644
--- a/graphene/pyutils/dataclasses.py
+++ b/graphene/pyutils/dataclasses.py
@@ -2,12 +2,12 @@
 # https://docs.python.org/3/library/dataclasses.html
 # Original PEP proposal: PEP 557
 # https://www.python.org/dev/peps/pep-0557/
-import re
-import sys
 import copy
-import types
 import inspect
 import keyword
+import re
+import sys
+import types
 
 __all__ = [
     "dataclass",
diff --git a/graphene/test/__init__.py b/graphene/test/__init__.py
index 8591dc06..8da09550 100644
--- a/graphene/test/__init__.py
+++ b/graphene/test/__init__.py
@@ -1,6 +1,6 @@
-from promise import Promise, is_thenable
-from graphql.error import format_error as format_graphql_error
 from graphql.error import GraphQLError
+from graphql.error import format_error as format_graphql_error
+from promise import Promise, is_thenable
 
 from graphene.types.schema import Schema
 
diff --git a/graphene/types/argument.py b/graphene/types/argument.py
index 71026d45..31a23db7 100644
--- a/graphene/types/argument.py
+++ b/graphene/types/argument.py
@@ -71,9 +71,9 @@ class Argument(MountedType):
 
 
 def to_arguments(args, extra_args=None):
-    from .unmountedtype import UnmountedType
     from .field import Field
     from .inputfield import InputField
+    from .unmountedtype import UnmountedType
 
     if extra_args:
         extra_args = sorted(extra_args.items(), key=lambda f: f[1])
diff --git a/graphene/types/base64.py b/graphene/types/base64.py
index baedabeb..1ec87743 100644
--- a/graphene/types/base64.py
+++ b/graphene/types/base64.py
@@ -1,5 +1,5 @@
-from binascii import Error as _Error
 from base64 import b64decode, b64encode
+from binascii import Error as _Error
 
 from graphql.error import GraphQLError
 from graphql.language import StringValueNode, print_ast
diff --git a/graphene/types/definitions.py b/graphene/types/definitions.py
index 908cc7c8..74aff1e7 100644
--- a/graphene/types/definitions.py
+++ b/graphene/types/definitions.py
@@ -1,14 +1,8 @@
 from enum import Enum as PyEnum
 
-from graphql import (
-    GraphQLEnumType,
-    GraphQLInputObjectType,
-    GraphQLInterfaceType,
-    GraphQLObjectType,
-    GraphQLScalarType,
-    GraphQLUnionType,
-    Undefined,
-)
+from graphql import (GraphQLEnumType, GraphQLInputObjectType,
+                     GraphQLInterfaceType, GraphQLObjectType,
+                     GraphQLScalarType, GraphQLUnionType, Undefined)
 
 
 class GrapheneGraphQLType:
diff --git a/graphene/types/field.py b/graphene/types/field.py
index dafb04b5..91d511bf 100644
--- a/graphene/types/field.py
+++ b/graphene/types/field.py
@@ -2,13 +2,13 @@ import inspect
 from collections.abc import Mapping
 from functools import partial
 
+from ..utils.deprecated import warn_deprecation
 from .argument import Argument, to_arguments
 from .mountedtype import MountedType
 from .resolver import default_resolver
 from .structures import NonNull
 from .unmountedtype import UnmountedType
 from .utils import get_type
-from ..utils.deprecated import warn_deprecation
 
 base_type = type
 
diff --git a/graphene/types/generic.py b/graphene/types/generic.py
index 5d1a6c4b..e75a58af 100644
--- a/graphene/types/generic.py
+++ b/graphene/types/generic.py
@@ -1,13 +1,8 @@
 from __future__ import unicode_literals
 
-from graphql.language.ast import (
-    BooleanValueNode,
-    FloatValueNode,
-    IntValueNode,
-    ListValueNode,
-    ObjectValueNode,
-    StringValueNode,
-)
+from graphql.language.ast import (BooleanValueNode, FloatValueNode,
+                                  IntValueNode, ListValueNode, ObjectValueNode,
+                                  StringValueNode)
 
 from graphene.types.scalars import MAX_INT, MIN_INT
 
diff --git a/graphene/types/inputobjecttype.py b/graphene/types/inputobjecttype.py
index 98f0148d..6eda6a7e 100644
--- a/graphene/types/inputobjecttype.py
+++ b/graphene/types/inputobjecttype.py
@@ -6,7 +6,7 @@ from .utils import yank_fields_from_attrs
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from typing import Dict, Callable  # NOQA
+    from typing import Callable, Dict  # NOQA
 
 
 class InputObjectTypeOptions(BaseOptions):
diff --git a/graphene/types/mutation.py b/graphene/types/mutation.py
index 6e041bbf..18aa1f68 100644
--- a/graphene/types/mutation.py
+++ b/graphene/types/mutation.py
@@ -2,15 +2,16 @@ from ..utils.deprecated import warn_deprecation
 from ..utils.get_unbound_function import get_unbound_function
 from ..utils.props import props
 from .field import Field
+from .interface import Interface
 from .objecttype import ObjectType, ObjectTypeOptions
 from .utils import yank_fields_from_attrs
-from .interface import Interface
 
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
+    from typing import Callable, Dict, Iterable, Type  # NOQA
+
     from .argument import Argument  # NOQA
-    from typing import Dict, Type, Callable, Iterable  # NOQA
 
 
 class MutationOptions(ObjectTypeOptions):
diff --git a/graphene/types/objecttype.py b/graphene/types/objecttype.py
index f4a0f5a0..975b2393 100644
--- a/graphene/types/objecttype.py
+++ b/graphene/types/objecttype.py
@@ -4,9 +4,9 @@ from .interface import Interface
 from .utils import yank_fields_from_attrs
 
 try:
-    from dataclasses import make_dataclass, field
+    from dataclasses import field, make_dataclass
 except ImportError:
-    from ..pyutils.dataclasses import make_dataclass, field  # type: ignore
+    from ..pyutils.dataclasses import field, make_dataclass  # type: ignore
 
 # For static type checking with Mypy
 MYPY = False
diff --git a/graphene/types/scalars.py b/graphene/types/scalars.py
index 472f2d41..1658ec1c 100644
--- a/graphene/types/scalars.py
+++ b/graphene/types/scalars.py
@@ -1,11 +1,7 @@
 from typing import Any
 
-from graphql.language.ast import (
-    BooleanValueNode,
-    FloatValueNode,
-    IntValueNode,
-    StringValueNode,
-)
+from graphql.language.ast import (BooleanValueNode, FloatValueNode,
+                                  IntValueNode, StringValueNode)
 
 from .base import BaseOptions, BaseType
 from .unmountedtype import UnmountedType
diff --git a/graphene/types/schema.py b/graphene/types/schema.py
index 55f0bf93..f8666be1 100644
--- a/graphene/types/schema.py
+++ b/graphene/types/schema.py
@@ -1,45 +1,21 @@
 import inspect
 from functools import partial
 
-from graphql import (
-    default_type_resolver,
-    get_introspection_query,
-    graphql,
-    graphql_sync,
-    introspection_types,
-    parse,
-    print_schema,
-    subscribe,
-    validate,
-    ExecutionResult,
-    GraphQLArgument,
-    GraphQLBoolean,
-    GraphQLError,
-    GraphQLEnumValue,
-    GraphQLField,
-    GraphQLFloat,
-    GraphQLID,
-    GraphQLInputField,
-    GraphQLInt,
-    GraphQLList,
-    GraphQLNonNull,
-    GraphQLObjectType,
-    GraphQLSchema,
-    GraphQLString,
-    Undefined,
-)
+from graphql import (ExecutionResult, GraphQLArgument, GraphQLBoolean,
+                     GraphQLEnumValue, GraphQLError, GraphQLField,
+                     GraphQLFloat, GraphQLID, GraphQLInputField, GraphQLInt,
+                     GraphQLList, GraphQLNonNull, GraphQLObjectType,
+                     GraphQLSchema, GraphQLString, Undefined,
+                     default_type_resolver, get_introspection_query, graphql,
+                     graphql_sync, introspection_types, parse, print_schema,
+                     subscribe, validate)
 
-from ..utils.str_converters import to_camel_case
 from ..utils.get_unbound_function import get_unbound_function
-from .definitions import (
-    GrapheneEnumType,
-    GrapheneGraphQLType,
-    GrapheneInputObjectType,
-    GrapheneInterfaceType,
-    GrapheneObjectType,
-    GrapheneScalarType,
-    GrapheneUnionType,
-)
+from ..utils.str_converters import to_camel_case
+from .definitions import (GrapheneEnumType, GrapheneGraphQLType,
+                          GrapheneInputObjectType, GrapheneInterfaceType,
+                          GrapheneObjectType, GrapheneScalarType,
+                          GrapheneUnionType)
 from .dynamic import Dynamic
 from .enum import Enum
 from .field import Field
diff --git a/graphene/types/tests/test_base64.py b/graphene/types/tests/test_base64.py
index b096dcbc..d6f08882 100644
--- a/graphene/types/tests/test_base64.py
+++ b/graphene/types/tests/test_base64.py
@@ -2,10 +2,10 @@ import base64
 
 from graphql import GraphQLError
 
+from ..base64 import Base64
 from ..objecttype import ObjectType
 from ..scalars import String
 from ..schema import Schema
-from ..base64 import Base64
 
 
 class Query(ObjectType):
diff --git a/graphene/types/tests/test_datetime.py b/graphene/types/tests/test_datetime.py
index 74f88bd8..3eddefff 100644
--- a/graphene/types/tests/test_datetime.py
+++ b/graphene/types/tests/test_datetime.py
@@ -2,7 +2,6 @@ import datetime
 
 import pytz
 from graphql import GraphQLError
-
 from pytest import fixture
 
 from ..datetime import Date, DateTime, Time
diff --git a/graphene/types/tests/test_mutation.py b/graphene/types/tests/test_mutation.py
index 4a7ad3c7..5564afab 100644
--- a/graphene/types/tests/test_mutation.py
+++ b/graphene/types/tests/test_mutation.py
@@ -2,12 +2,12 @@ from pytest import raises
 
 from ..argument import Argument
 from ..dynamic import Dynamic
+from ..interface import Interface
 from ..mutation import Mutation
 from ..objecttype import ObjectType
 from ..scalars import String
 from ..schema import Schema
 from ..structures import NonNull
-from ..interface import Interface
 
 
 class MyType(Interface):
diff --git a/graphene/types/tests/test_query.py b/graphene/types/tests/test_query.py
index 2d3e4c73..14324d69 100644
--- a/graphene/types/tests/test_query.py
+++ b/graphene/types/tests/test_query.py
@@ -1,13 +1,9 @@
 import json
 from functools import partial
 
-from graphql import (
-    GraphQLError,
-    GraphQLResolveInfo as ResolveInfo,
-    Source,
-    execute,
-    parse,
-)
+from graphql import GraphQLError
+from graphql import GraphQLResolveInfo as ResolveInfo
+from graphql import Source, execute, parse
 
 from ..context import Context
 from ..dynamic import Dynamic
diff --git a/graphene/types/tests/test_resolver.py b/graphene/types/tests/test_resolver.py
index dcadb6d8..96d75a70 100644
--- a/graphene/types/tests/test_resolver.py
+++ b/graphene/types/tests/test_resolver.py
@@ -1,10 +1,5 @@
-from ..resolver import (
-    attr_resolver,
-    dict_resolver,
-    dict_or_attr_resolver,
-    get_default_resolver,
-    set_default_resolver,
-)
+from ..resolver import (attr_resolver, dict_or_attr_resolver, dict_resolver,
+                        get_default_resolver, set_default_resolver)
 
 args = {}
 context = None
diff --git a/graphene/types/tests/test_scalar.py b/graphene/types/tests/test_scalar.py
index 2ff67208..0e924fcb 100644
--- a/graphene/types/tests/test_scalar.py
+++ b/graphene/types/tests/test_scalar.py
@@ -1,6 +1,7 @@
-from ..scalars import Scalar, Int, BigInt
 from graphql.language.ast import IntValueNode
 
+from ..scalars import BigInt, Int, Scalar
+
 
 def test_scalar():
     class JSONScalar(Scalar):
diff --git a/graphene/types/tests/test_subscribe_async.py b/graphene/types/tests/test_subscribe_async.py
index 9b7a1f13..b68f6875 100644
--- a/graphene/types/tests/test_subscribe_async.py
+++ b/graphene/types/tests/test_subscribe_async.py
@@ -1,6 +1,6 @@
 from pytest import mark
 
-from graphene import ObjectType, Int, String, Schema, Field
+from graphene import Field, Int, ObjectType, Schema, String
 
 
 class Query(ObjectType):
diff --git a/graphene/types/tests/test_type_map.py b/graphene/types/tests/test_type_map.py
index 334eb241..c0c30ede 100644
--- a/graphene/types/tests/test_type_map.py
+++ b/graphene/types/tests/test_type_map.py
@@ -1,14 +1,7 @@
-from graphql.type import (
-    GraphQLArgument,
-    GraphQLEnumType,
-    GraphQLEnumValue,
-    GraphQLField,
-    GraphQLInputField,
-    GraphQLInputObjectType,
-    GraphQLInterfaceType,
-    GraphQLObjectType,
-    GraphQLString,
-)
+from graphql.type import (GraphQLArgument, GraphQLEnumType, GraphQLEnumValue,
+                          GraphQLField, GraphQLInputField,
+                          GraphQLInputObjectType, GraphQLInterfaceType,
+                          GraphQLObjectType, GraphQLString)
 
 from ..dynamic import Dynamic
 from ..enum import Enum
@@ -18,8 +11,8 @@ from ..inputobjecttype import InputObjectType
 from ..interface import Interface
 from ..objecttype import ObjectType
 from ..scalars import Int, String
-from ..structures import List, NonNull
 from ..schema import Schema
+from ..structures import List, NonNull
 
 
 def create_type_map(types, auto_camelcase=True):
diff --git a/graphene/types/union.py b/graphene/types/union.py
index 928656ae..44f1086f 100644
--- a/graphene/types/union.py
+++ b/graphene/types/union.py
@@ -4,9 +4,10 @@ from .unmountedtype import UnmountedType
 # For static type checking with Mypy
 MYPY = False
 if MYPY:
-    from .objecttype import ObjectType  # NOQA
     from typing import Iterable, Type  # NOQA
 
+    from .objecttype import ObjectType  # NOQA
+
 
 class UnionOptions(BaseOptions):
     types = ()  # type: Iterable[Type[ObjectType]]
diff --git a/graphene/types/uuid.py b/graphene/types/uuid.py
index c21eb165..5e49ebfe 100644
--- a/graphene/types/uuid.py
+++ b/graphene/types/uuid.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import
+
 from uuid import UUID as _UUID
 
 from graphql.language.ast import StringValueNode
diff --git a/graphene/utils/tests/test_deduplicator.py b/graphene/utils/tests/test_deduplicator.py
index b845caf1..1c79dc30 100644
--- a/graphene/utils/tests/test_deduplicator.py
+++ b/graphene/utils/tests/test_deduplicator.py
@@ -1,4 +1,5 @@
 import datetime
+
 import graphene
 from graphene import relay
 from graphene.types.resolver import dict_resolver