diff --git a/libs/lib/xaal/lib/bindings.py b/libs/lib/xaal/lib/bindings.py
index aa4a5c3803d923635d7c02cbb6ac8d16866e20c7..6af87aa545614fdc6ec0111cb6d8ada60490d3df 100644
--- a/libs/lib/xaal/lib/bindings.py
+++ b/libs/lib/xaal/lib/bindings.py
@@ -2,12 +2,13 @@ import uuid
 
 from .exceptions import UUIDError
 
+
 class UUID:
     def __init__(self, *args, **kwargs):
         self.__uuid = uuid.UUID(*args, **kwargs)
 
     @staticmethod
-    def random_base(digit=2) -> 'UUID':
+    def random_base(digit=2) -> "UUID":
         """zeros the last digits of a random uuid, usefull w/ you want to forge some addresses
         two digit is great.
         """
@@ -19,15 +20,15 @@ class UUID:
             raise UUIDError
 
     @staticmethod
-    def random() -> 'UUID':
+    def random() -> "UUID":
         tmp = uuid.uuid1().int
         return UUID(int=tmp)
 
-    def __add__(self, value:int) -> 'UUID':
+    def __add__(self, value: int) -> "UUID":
         tmp = self.__uuid.int + value
         return UUID(int=tmp)
 
-    def __sub__(self, value:int) -> 'UUID':
+    def __sub__(self, value: int) -> "UUID":
         tmp = self.__uuid.int - value
         return UUID(int=tmp)
 
@@ -52,7 +53,7 @@ class UUID:
     def get(self) -> uuid.UUID:
         return self.__uuid
 
-    def set(self, value:uuid.UUID):
+    def set(self, value: uuid.UUID):
         self.__uuid = value
 
     @property