python 学习day five

1、代码学习部分

car=input("What kind of cars you want to rent?")
print("Let me see if I can find you a "+car)

number=input("How many people?")
number=int(number)
if number > 8:
    print("There are no extra table")
else:
    print("There have table")

number1=input("please input a number:")
number1=int(number1)
if number1%10 == 0:
    print("This number is integral multiple the 10.")
else:
    print("This number is not integral multiple the 10.")

prompt="please order your dosing:"
prompt+="\nplease input quit to finish."
while True:
    dosing=input(prompt)

    if dosing == "quit":
        break
    else:
        print("we will add "+dosing+" in pizza.")

while True:
    age = input("please tell me your age:\nplease input quit to finish.")
    if age == "quit":
        break
    age = int(age)
    if age<3:
        print("you are free.")
        break
    elif age <12:
        print("you need pay 10 dollars.")
    else:
        print("you need pay 15 dollars.")

#发生错误：在输入quit时，发生错误：nvalid literal for int() with base 10: 'quit' 怎么破解？ 问晨哥。
active = True
while active:
    age = input("please tell me your age:\nplease input quit to finish.")
    if age == "quit":
        active = False
    age = int(age)
    if age <3:
        print("you are free.")
        break
    elif age <12:
        print("you need pay 10 dollars.")
    else:
        print("you need pay 15 dollars.")


#无限循环  ：  快捷键ctrl+C 结束
while True:
    print("zyk is so smart.")

sandwich_orders=["jack","lucy","tuna"]
finished_sandwiches=[]
while sandwich_orders:
    current_sandwiches=sandwich_orders.pop()
    print("I made your "+current_sandwiches+" sandwich")
    finished_sandwiches.append(current_sandwiches)

print("I have made these sandwich for you:")
for sandwich in finished_sandwiches:
    print(sandwich)


sandwich_orders=["pastrami","jack","pastrami","lucy","pastrami","tuna"]
print("Pastrami have been sold out.")
while "pastrami" in sandwich_orders:
    sandwich_orders.remove('pastrami')

print(sandwich_orders)

2、学习心得与疑问

2.1、数字用引号括起来，代表计算机将它当作字符串，不能将数字与字符串进行比较，否则会发生错误

2.2、将数值输入用于计算和比较前，务必将其转换为数值表示

2.3、多行代码快速注释：Ctrl+/

2.4、\n 换行符的用法：要放在引号中

2.5、在列表里单引号‘’与双引号”“可以混合用吗？

答：可以