diff --git a/graphene/pyutils/compat.py b/graphene/pyutils/compat.py
index 68734a99..86452081 100644
--- a/graphene/pyutils/compat.py
+++ b/graphene/pyutils/compat.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import
+import six
 
 try:
     from enum import Enum
@@ -9,3 +10,10 @@ try:
     from inspect import signature
 except ImportError:
     from .signature import signature
+
+if six.PY2:
+    def func_name(func):
+        return func.func_name
+else:
+    def func_name(func):
+        return func.__name__
diff --git a/graphene/relay/mutation.py b/graphene/relay/mutation.py
index 1f8f80e5..fb57c275 100644
--- a/graphene/relay/mutation.py
+++ b/graphene/relay/mutation.py
@@ -60,9 +60,9 @@ class ClientIDMutation(Mutation):
                     ('Cannot set client_mutation_id in the payload object {}'
                      ).format(repr(payload)))
             return payload
-        
+
         result = cls.mutate_and_get_payload(input, context, info)
         if is_thenable(result):
             return Promise.resolve(result).then(on_resolve)
-        
+
         return on_resolve(result)
diff --git a/graphene/types/context.py b/graphene/types/context.py
index 4877ce13..bac2073c 100644
--- a/graphene/types/context.py
+++ b/graphene/types/context.py
@@ -1,4 +1,4 @@
 class Context(object):
     def __init__(self, **params):
         for key, value in params.items():
-            setattr(self,key, value)
+            setattr(self, key, value)
diff --git a/graphene/types/inputobjecttype.py b/graphene/types/inputobjecttype.py
index 19bb7c74..cf66065f 100644
--- a/graphene/types/inputobjecttype.py
+++ b/graphene/types/inputobjecttype.py
@@ -37,7 +37,7 @@ class InputObjectType(dict, UnmountedType, BaseType):
         dict.__init__(self, *args, **kwargs)
         for key, value in self.items():
             setattr(self, key, value)
-    
+
     @classmethod
     def create_container(cls, data):
         return cls(data, _as_container=True)
diff --git a/graphene/types/tests/test_abstracttype.py b/graphene/types/tests/test_abstracttype.py
index 44fc570d..b1bcaa3f 100644
--- a/graphene/types/tests/test_abstracttype.py
+++ b/graphene/types/tests/test_abstracttype.py
@@ -3,8 +3,8 @@ import pytest
 from ..objecttype import ObjectType
 from ..unmountedtype import UnmountedType
 from ..abstracttype import AbstractType
+from .. import abstracttype
 from ..field import Field
-from ...utils import deprecated
 
 
 class MyType(ObjectType):
@@ -18,12 +18,12 @@ class MyScalar(UnmountedType):
 
 
 def test_abstract_objecttype_warn_deprecation(mocker):
-    mocker.patch.object(deprecated, 'warn_deprecation')
+    mocker.patch.object(abstracttype, 'warn_deprecation')
 
     class MyAbstractType(AbstractType):
         field1 = MyScalar()
 
-    deprecated.warn_deprecation.assert_called_once()
+    abstracttype.warn_deprecation.assert_called_once()
 
 
 def test_generate_objecttype_inherit_abstracttype():
diff --git a/graphene/utils/annotate.py b/graphene/utils/annotate.py
index 5298e40b..b55c3d6c 100644
--- a/graphene/utils/annotate.py
+++ b/graphene/utils/annotate.py
@@ -1,6 +1,5 @@
 import six
-from functools import wraps
-from ..pyutils.compat import signature
+from ..pyutils.compat import signature, func_name
 
 from .deprecated import warn_deprecation
 
@@ -25,7 +24,7 @@ def annotate(_func=None, _trigger_warning=True, **annotations):
             'The key {key} is not a function parameter in the function "{func_name}".'
         ).format(
             key=key,
-            func_name=_func.func_name
+            func_name=func_name(_func)
         )
 
     func_annotations = getattr(_func, '__annotations__', None)
@@ -33,6 +32,6 @@ def annotate(_func=None, _trigger_warning=True, **annotations):
         _func.__annotations__ = annotations
     else:
         _func.__annotations__.update(annotations)
-    
+
     _func._is_annotated = True
     return _func
diff --git a/graphene/utils/auto_resolver.py b/graphene/utils/auto_resolver.py
index dd551731..633c1a95 100644
--- a/graphene/utils/auto_resolver.py
+++ b/graphene/utils/auto_resolver.py
@@ -4,7 +4,7 @@ from .resolver_from_annotations import resolver_from_annotations, is_wrapped_fro
 def auto_resolver(func=None):
     annotations = getattr(func, '__annotations__', {})
     is_annotated = getattr(func, '_is_annotated', False)
-    
+
     if (annotations or is_annotated) and not is_wrapped_from_annotations(func):
         # Is a Graphene 2.0 resolver function
         return resolver_from_annotations(func)
diff --git a/graphene/utils/resolve_only_args.py b/graphene/utils/resolve_only_args.py
index 93a5a0fb..e30f1f03 100644
--- a/graphene/utils/resolve_only_args.py
+++ b/graphene/utils/resolve_only_args.py
@@ -1,5 +1,4 @@
 from six import PY2
-from functools import wraps
 from .annotate import annotate
 from .deprecated import deprecated
 
@@ -11,9 +10,11 @@ if PY2:
 else:
     deprecation_reason = (
         'The decorator @resolve_only_args is deprecated.\n'
-        'Please use Python 3 type annotations instead. Read more: https://docs.python.org/3/library/typing.html'
+        'Please use Python 3 type annotations instead. Read more: '
+        'https://docs.python.org/3/library/typing.html'
     )
 
+
 @deprecated(deprecation_reason)
 def resolve_only_args(func):
     return annotate(func)
diff --git a/graphene/utils/resolver_from_annotations.py b/graphene/utils/resolver_from_annotations.py
index 49aee652..79fb99de 100644
--- a/graphene/utils/resolver_from_annotations.py
+++ b/graphene/utils/resolver_from_annotations.py
@@ -37,7 +37,7 @@ def resolver_from_annotations(func):
     else:
         def inner(root, args, context, info):
             return func(root, **args)
-    
+
     inner._is_wrapped_from_annotations = True
     return wraps(func)(inner)