Python基础-if语句-if_expression.py

# ~ coding=UTF-8

car = 'Audi'
if car == 'audi':#区分大小写
	print(True)
else:
	print(False)
print(car != 'audi')
	
# ~ 检查特定值是否在列表中
request_toppings = ['mushrooms','onions','pineapple']
print('mushrooms' in request_toppings)
print('pepperoni' in request_toppings)

# ~ 检查特定值是否不在列表中
banned_users = ['andrew','carolina','david']
user = 'marie'
if user not in banned_users:
	print(user.title()+' is permitted.')

# ~ 布尔表达式
game_active = True
can_edit = False

# ~ if语句结构：if/if-else/if-elif-elif-...elif-else (else可省略)/if-if-if

# ~ if语句处理列表
requested_toppings = ['mashrooms','green peppers','extra cheese']
# ~ requested_toppings = []
if requested_toppings:#确定列表不是空的
	for requested_topping in request_toppings:
		if requested_topping == 'green peppers':#检查特殊元素
			print("Sorry, we are out of green peppers right now.")
		else:
			print("Adding "+requested_topping+".")
	print("\nFinished making your pizza!")
else:
	print("Are you sure you want a plain pizza?\n")

# ~ 使用多个列表
requested_toppings[1] = 'french fries'
availabe_toppings = ['mashrooms','olives','green peppers','pepperoni',
						'pineapple','extra cheese']
for requested_topping in requested_toppings:
	if requested_topping in availabe_toppings:
		print("Adding "+requested_topping+".")
	else:
		print("Sorry, we don't have "+requested_topping+".")
print("\nFinished making your pizza!")