s = 0
for i in range(10):
    s += i
print(i) # => 45

def addition(a, b):
    return a + b

age = 18
if age <= 18:
    print("Young")
elif age <= 60:
    print("Adult")
else:
    print("Old Man")
# => "Young"

class Dog(Animal):
    def __init__(self, name):
        self.name = name
        self.tricks = []
    
    def addTrick(trick):
        self.tricks.append(trick)