diff --git a/openpype/hosts/maya/plugins/load/load_vrayproxy.py b/openpype/hosts/maya/plugins/load/load_vrayproxy.py
index 3112a37c19..d5d4a941e3 100644
--- a/openpype/hosts/maya/plugins/load/load_vrayproxy.py
+++ b/openpype/hosts/maya/plugins/load/load_vrayproxy.py
@@ -146,7 +146,8 @@ class VRayProxyLoader(api.Loader):
             name = os.path.splitext(os.path.basename(filename))[0]
 
         parent = cmds.createNode("transform", name=name)
-        proxy = cmds.createNode("VRayProxy", name=name + "Shape", parent=parent)
+        proxy = cmds.createNode(
+            "VRayProxy", name="{}Shape".format(name), parent=parent)
         cmds.setAttr(proxy + ".fileName", filename, type="string")
         cmds.connectAttr("time1.outTime", proxy + ".currentFrame")
 
@@ -182,4 +183,4 @@ class VRayProxyLoader(api.Loader):
             self.log.debug("File: {}".format(self.fname))
             return file_name
 
-        return None
+        return ""
diff --git a/openpype/tools/mayalookassigner/commands.py b/openpype/tools/mayalookassigner/commands.py
index 974f68ba33..2add5d3499 100644
--- a/openpype/tools/mayalookassigner/commands.py
+++ b/openpype/tools/mayalookassigner/commands.py
@@ -140,7 +140,7 @@ def create_items_from_nodes(nodes):
         path = cmds.getAttr("{}.fileName".format(vp))
         ids = vray_proxies.get_alembic_ids_cache(path)
         parent_id = {}
-        for k, n in ids.items():
+        for k, _ in ids.items():
             pid = k.split(":")[0]
             if not parent_id.get(pid):
                 parent_id.update({pid: [vp]})
diff --git a/openpype/tools/mayalookassigner/vray_proxies.py b/openpype/tools/mayalookassigner/vray_proxies.py
index ecc7de1330..d2f345e628 100644
--- a/openpype/tools/mayalookassigner/vray_proxies.py
+++ b/openpype/tools/mayalookassigner/vray_proxies.py
@@ -192,7 +192,8 @@ def load_look(version_id):
         # Load file
         loaders = api.loaders_from_representation(api.discover(api.Loader),
                                                   representation_id)
-        loader = next((i for i in loaders if i.__name__ == "LookLoader"), None)
+        loader = next(
+            (i for i in loaders if i.__name__ == "LookLoader"), None)
         if loader is None:
             raise RuntimeError("Could not find LookLoader, this is a bug")
 
@@ -274,8 +275,12 @@ def vrayproxy_assign_look(vrayproxy, subset="lookDefault"):
 
         # Get only the node ids and paths related to this asset
         # And get the shader edits the look supplies
-        asset_nodes_by_id = {node_id: nodes_by_id[node_id] for node_id in node_ids}
-        edits = list(lib.iter_shader_edits(relationships, shadernodes, asset_nodes_by_id))
+        asset_nodes_by_id = {
+            node_id: nodes_by_id[node_id] for node_id in node_ids
+        }
+        edits = list(
+            lib.iter_shader_edits(
+                relationships, shadernodes, asset_nodes_by_id))
 
         # Create assignments
         assignments = {}
@@ -287,7 +292,8 @@ def vrayproxy_assign_look(vrayproxy, subset="lookDefault"):
                     print("Skipping non-shader: %s" % shader)
                     continue
 
-                inputs = cmds.listConnections(shader + ".surfaceShader", source=True)
+                inputs = cmds.listConnections(
+                    shader + ".surfaceShader", source=True)
                 if not inputs:
                     print("Shading engine missing material: %s" % shader)
 
@@ -295,11 +301,12 @@ def vrayproxy_assign_look(vrayproxy, subset="lookDefault"):
                 for i, node in enumerate(nodes):
                     if "." in node:
                         log.warning(
-                            "Converting face assignment to full object assignment. This conversion can be lossy: %s" % node)
+                            ("Converting face assignment to full object "
+                             "assignment. This conversion can be lossy: "
+                             "{}").format(node))
                         nodes[i] = node.split(".")[0]
 
                 material = inputs[0]
                 assignments[material] = nodes
 
         assign_vrayproxy_shaders(vrayproxy, assignments)
-