第七章介绍的是python的输入函数input（），和while循环，并说明了python的循环可以使用continue和break来实现循环的 一些要求。并且在本章还说明了字符转化为int类型数字的方法。
#7-1
car = input("Let me see if I can find you a Subaru")
print("Oh, you want to find a "+ car)
#7-2
seats = input("How many people are eating here?")
int(seats)
if seats > 8:
print("Here is no spare table for me")
else print("Here is some spare tables")
#7-3
number = input("Please input a number")
int(number)
if number % 10 == 0:
print("It is a multiplier of 10.")
else print("It is not a multiple of ten.")
#7-4
while True:
ingredient = input("Plese input what you want,if you want to stop you can input quit:")
if ingredient == 'quit':
break
else print("We will add " + ingredient + " to your pizza")
#7-8
sandwich_orders = ['First','Second','Third']
finshed_sandwich =[]
# for sandwich in sandwich_orders:
# finshed_sandwich.append(sandwich)
# sandwich_orders.remove(sandwich)
# print("I made the " + sandwich + " sandwich.")
#The above way is a wrong answer for the for statement will find the second message,
#which is 'Third', when the 'First' is deleted. But as expected, it should be 'Second',
#so the for statement will search the list as [0],[1]..., but as the first element, the second element.
#So when you would deleted some element of a list, you should use for statement carefully.
while sandwich_orders:
sandwich = sandwich_orders[0]
finshed_sandwich.append(sandwich)
sandwich_orders.remove(sandwich)
print("I made the " + sandwich + " sandwich.")
#or another way to solve this problem
while sandwich_orders:
sandwich = sandwich_orders.pop()
finshed_sandwich.append(sandwich)
print("I made the " + sandwich + " sandwich.")
#7-9
sandwich_orders = ['pastrani','Bst','pastrani','pastrani']
print("熟食店的五香熏肉已经卖完了")
while 'pastrani' in sandwich_orders:
sandwich_orders.remove('pastrani')
print(sandwich_orders)
因为sublime并不支持输入，所以这里在dos下编译了。总的来说，这张还是比较简单，只有第八小题有些难度，但是只要小心点还是没问题的，具体解法可以看下上面代码和注释。