age1 = 22
age2 = 19
s1 = age1 > 21 and age2 > 19
print(s1)
s2 = age1 > 21 or age2 > 19
print(s2)

requested_toppings = ['mushrooms','onions','pineapple']
s1 = 'mushrooms' in requested_toppings
print(s1)
s2 = 'pepperoni' in requested_toppings
print(s2)

requested_toppings = ['mushrooms','onions','pineapple']
s1 = 'mushrooms' not in requested_toppings
print(s1)
s2 = 'pepperoni' not in requested_toppings
print(s2)

age = 19
if age >= 18:
    print('You are old enough to vote')
if age >= 20:
    print('is no print')

age = 12
if age < 4:
    price = 0
elif age < 18:
    price = 5
elif age < 65:
    price = 10
else:
    price = 5
print('Your admission cost is $' + str(price) + '.')

requested_toppings= ['mushrooms','green peppers','extra cheese']
for requested_topping in requested_toppings:
    if requested_topping == 'green peppers':
        print('Sorry,we are out of green peppers right now')
    else:
        print('Adding' + requested_topping + '.')

requested_toppings= []
if requested_toppings:
    for requested_topping in requested_toppings:
        print('Adding ' + requested_topping + '.')
else:
    print('Are you sure you want a plain pizza?')

available_toppings = ['mushrooms','olives','green peppers','pepperoni']
requested_toppings= ['mushrooms','french fries','green peppers']

for requested_topping in requested_toppings:
    if requested_topping in available_toppings:
        print('Adding ' + requested_topping + '.')
    else:
        print("Sorry,we don\'t have " + requested_topping + '.')