Python学习笔记——输入语句和while循环

在这节课我们学习到了python中的输入语句（读取一行的字符串）和while循环内容也比较简单，直接使用input（）函数和while语句即可实现，以下是部分练习题的代码：#7-3 输入整数
num=int(input('Plz enter a number: '))
if num%10==0:
print('The number is mutiple of 10.')
else:
print('The number is not mutiple of 10.')
print('\n')

#7-6 用不同的方式结束循环
count=3
while count>0: #条件语句控制
ing=input('Plz enter the ingredient you want: ')
print('We will add ',ing,' on your pizza.')
count-=1
print('Plz wait for your pizza.')
active=True
while active: #使用标识控制
ing=input('Plz enter the ingredient you want(enter "quit" to break):')
if ing=='quit':
active=False
continue
else:
print('We will add ',ing,' on your pizza.')
print('Plz wait for your pizza.')
while 1:
ing=input('Plz enter the ingredient you want(enter "quit" to break):')
if ing=='quit':
break
else:
print('We will add ',ing,' on your pizza.')
print('Plz wait for your pizza.')
print('\n')

#7-8&7-9 用循环操控列表（这里用字典实现）
sand_ors={'tuna':2,'pastrami':3,'beef':4}
print('We have sandwichs of:')
for sand in sand_ors:
print(sand)
while 1:
order=input('Plz enter your choice and how many sandwich yo
4000
u want(enter "quit" to break): ')
if order=='quit':
break
l=order.split()
sand_ors[l[0]]-=int(l[1])
if sand_ors[l[0]]<0:
print('Sorry, ',l[0],' sandwich has been sold out!')
print('You can only get ',end='')
print(sand_ors[l[0]]+int(l[1]),end=' ')
print('sandwich.')
sand_ors[l[0]]=0
else:
print('Plz wait for your ',l[0],'sandwich')
print('\n')

2018/3/26