print("hello world")
# single-line comment
cars = 5
driving = True
# cars = 5 = "5"


print("I have %d cars" % cars)

age = input("How old are you? ")
print ("Wow %d, you're old." % age)


colors = ["red", "orange", "yellow", "green", "blue"]
colors.append("brown")

print(colors)
colors.pop(0)
print(colors)


print (len(colors))
print (colors[1])