Assigning the first two variables to init_display

Author: ggurioli

bladex/propeller.py

@@ -75,6 +75,6 @@ def display(self):
         """
         Display the propeller with shaft.
         """
-        display, start_display, _, _ = init_display()
+        display, start_display = init_display()[:2]
         display.DisplayShape(self.sewed_full_body, update=True)
         start_display()

bladex/shaft.py

@@ -55,6 +55,6 @@ def display(self):
         Display the shaft.
         """
         shaft_solid = self.generate_solid()
-        display, start_display, _, _ = init_display()
+        display, start_display = init_display()[:2]
         display.DisplayShape(shaft_solid, update=True)
         start_display()