三、python——if语句

cars = ['audi', 'bmw', 'aubaru', 'toyota']
for car in cars:
    if car == 'bmw':
        print(car.upper())
    else:
        print(car.title())

# and or
age = 18
age_0 = 20
print(age == 18)
print(age > 10)
print(age >= 18)
print(age < 20)
print(age <= 20)
print(age > 10 and age_0 < 20)
print(age > 10 and age_0 <= 20)
print(age > 10 or age_0 < 20)
print(age > 10 or age_0 <= 20)

# 检查特定值是否包含在列表
request_toppings = ['aa', 'bb', 'cc']
print('检查特定值是否包含在列表:')
print('aa' in request_toppings)
print('dd' in request_toppings)

ages = [1, 2, 3, 4, 5, 6, 7, 8, 9]
for age in ages:
    if age < 3:
        print(f"{age} is less than 3")
    elif age < 6:
        print(f"{age} is more than 3 nut less than 6")
    else:
        print(f"{age} id more than 6")

available_toppings = ["mushrooms", 'olives', 'green peppers']
request_toppings = ["mushrooms", 'extra cheese']
for request_topping in request_toppings:
    if request_topping in available_toppings:
        print("adding " + request_topping + ".")
    else:
        print("sorry, we don't have " + request_topping + ".")
print("Finished making your pizza.")