Python

Why when you take off the "self" before pi it says: "Did you define pi?"

class Circle: pi = 3.14 def __init__(self, diameter): print("Creating circle with diameter {d}".format(d=diameter)) # Add assignment for self.radius here: self.radius = diameter/2 def circumference(self): return 2 * self.pi * self.radius

medium_pizza = Circle(12) teaching_table = Circle(36) round_room = Circle(11460)

print(medium_pizza.circumference()) print(teaching_table.circumference()) print(round_room.circumference())