1. if語句

cars = ['audi','bmw','subaru','toyota']

for car in cars:

? ? if car == 'bmw': ?#在python中都是用 : 來進入下一級

? ? ? ? print(car.upper())

? ? else:

? ? ? ? print(car.title())

car1 = 'audi'

print(car1 == 'Audi') ?#python中會檢查大小寫

requested_topping = "mushroom"

if requested_topping != 'anchovies': #python中的不等于判斷 以及不需要括號

? ? print("Hold the anchovies")

age_0 = 23

age_1 = 26

print(age_0>22 and age_1>22) #and 需要兩個條件都滿足 可添加括號

print(age_0<22 or age_1<22)? #or 只需要滿足其中一個條件即可 可添加括號

是否在列表中，使用in

# in list or not

requested_toppings = ['mushroom','onions','pineapple']

a = 'mushroom' in requested_toppings

b = 'pepper' in requested_toppings

print(a) ?#true

print(b) ?#false

food = 'pepper'

if food not in requested_toppings:

print(food.title() + ' should also be added to the list')