what's wrong with my code

[Evil_Patrick]

This working Fine for me

class Cat:
    def __init__(self, name):
        self.name = name
        self.tricks = []
 
    def add_trick(self, trick):
        self.tricks.append(trick)

a = Cat('Kelly')
a.add_trick('sit')

print(a.name)
print(a.tricks)

Output:
Kelly
['sit']