added tractor

Tractor.py

@@ -0,0 +1,24 @@
+class Vehicle:
+    def __init__(self,
+    numWheels,
+    engine,
+    numDoors,
+    colour):
+        self.numWheels = numWheels
+        self.engine = engine
+        self.numDoors = numDoors
+        self.colour = colour
+
+class Tractor(Vehicle):
+    def __init__(self,
+    numWheels,
+    engine,
+    numDoors,
+    colour,
+    addition,
+    trajectory):
+        super().__init__(numWheels, engine, numDoors, colour)
+        self.addition = addition
+        self.trajectory = trajectory
+
+tractor = Tractor(4, "spalinowy", 2, "czerwony", "dodatek", "trajektoria")