diff --git a/clearml/automation/controller.py b/clearml/automation/controller.py
index dfa87339..acb5b94e 100644
--- a/clearml/automation/controller.py
+++ b/clearml/automation/controller.py
@@ -3221,8 +3221,10 @@ class PipelineController(object):
             name=artifact_name,
             artifact_object=artifact_object,
             wait_on_upload=True,
-            extension_name=".pkl" if isinstance(artifact_object, dict) and
-                                     not self._artifact_serialization_function else None,
+            extension_name=(
+                ".pkl" if isinstance(artifact_object, dict) and not self._artifact_serialization_function
+                else None
+            ),
             serialization_function=self._artifact_serialization_function
         )
 
diff --git a/clearml/binding/environ_bind.py b/clearml/binding/environ_bind.py
index e5167368..69b6ffb3 100644
--- a/clearml/binding/environ_bind.py
+++ b/clearml/binding/environ_bind.py
@@ -246,7 +246,6 @@ class PatchOsFork(object):
 
         os._exit = _at_exit_callback
 
-
     @staticmethod
     def _patched_fork(*args, **kwargs):
         if not PatchOsFork._current_task:
diff --git a/clearml/utilities/proxy_object.py b/clearml/utilities/proxy_object.py
index 9aadc2f4..57ad1c58 100644
--- a/clearml/utilities/proxy_object.py
+++ b/clearml/utilities/proxy_object.py
@@ -287,7 +287,7 @@ class WrapperBase(type):
     # (http://code.activestate.com/recipes/496741/). It adds special methods
     # to the wrapper class so it can proxy the wrapped class. In addition, it
     # adds a field __overrides__ in the wrapper class dictionary, containing
-    # all attributes decorated to be overriden.
+    # all attributes decorated to be overridden.
 
     _special_names = [
         '__abs__', '__add__', '__and__', '__call__', '__cmp__', '__coerce__',
@@ -303,7 +303,7 @@ class WrapperBase(type):
         '__repr__', '__reversed__', '__rfloorfiv__', '__rlshift__', '__rmod__',
         '__rmul__', '__ror__', '__rpow__', '__rrshift__', '__rshift__', '__rsub__',
         '__rtruediv__', '__rxor__', '__setitem__', '__setslice__', '__sub__',
-        '__truediv__', '__xor__', 'next', '__str__', '__repr__', 
+        '__truediv__', '__xor__', 'next', '__str__', '__repr__',
         '__round__', '__fspath__', '__bytes__', '__index__'
     ]