ch01

ch01/bike.py

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+# let's define the class Bike
+class Bike:
+
+    def __init__(self, colour, frame_material):
+        self.colour = colour
+        self.frame_material = frame_material
+
+    def brake(self):
+        print("Braking!")
+
+# let's create a couple of instances
+red_bike = Bike('Red', 'Carbon fiber')
+blue_bike = Bike('Blue', 'Steel')
+
+# let's inspect the objects we have, instances of the Bike class.
+print(red_bike.colour)  # prints: Red
+print(red_bike.frame_material)  # prints: Carbon fiber
+print(blue_bike.colour)  # prints: Blue
+print(blue_bike.frame_material)  # prints: Steel
+
+# let's brake!
+red_bike.brake()  # prints: Braking!