import random
print('用列表存储随机整数: ')
lst = [random.randint(0, 100) for i in range(5)]
print(lst)
print('\n用集合存储随机整数: ')
s1 = {random.randint(0, 100) for i in range(5)}
print(s1)
print('\n用集合存储随机整数: ')
s2 = set()
while len(s2) < 5:
s2.add(random.randint(0, 100))
print(s2)
1.random.randint(0,100)生成随机数整数的范围是[0,100],可以取到100。
2.list(range(5))生成的是[0, 1, 2, 3, 4]，不包括5。
list（range(1,5))生成的有序序列范围是[1, 2, 3, 4]，不包括5.
3.不一定，随机数有可能重复，但只会出现一次。
4.一定是5。
lst = [55, 92, 88, 79, 96]
i = 0
while i < len(lst):
print(lst[i], end = ' ')
i += 1
print()
for i in range(len(lst)):
print(lst[i], end = ' ')
print()
for i in lst:
print(i , end = ' ')
print()
book_into = {'isbn': '987-7-5356-8297-0',
'书名': '白鲸记',
'作者': '克里斯多夫.夏布特',
'译者': '高文婧',
'出版社' : '湖南美术出版社',
'售价': 82}
for key, value in book_into.items():
print(f'{key}: {value}')
print()
book_infos = [{'书名':'昨日的世界','作者':'斯蒂芬.茨威格'},{'书名':'局外人','作者':'阿尔贝.加缪'},{'书名':'设计中的设计','作者':'原研哉'},{'书名':'万历十五年','作者':'黄仁宇'},{'书名':'刀锋','作者':'毛姆'}]
bookname = []
author = []
for i in range (len(book_infos)):
bookname.append(book_infos[i]['书名'])
author.append(book_infos[i]['作者'])
for i in range (0,5):
print(f'{i+1}.《{bookname[i]}》，{author[i]}')
text = '''The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!'''
list1 = list(text.lower().split())
d1 = dict.fromkeys('abcdefghijklmnopqrstuvwxyz',0)
for i in range (len(list1)):
for j in list1[i]:
if ord(j) in range(97,97+26):
d1[j] += 1
else:
continue
d2 = sorted([(x[1],x[0]) for x in d1.items()],reverse = True)
d3 = [(x[1],x[0]) for x in d2]
for i in range (len(d3)):
print(f'{d3[i][0]}:{d3[i][1]}')
code_majors={8326:'地信类',
8329:'计算机类',
8330:'气科类',
8336:'防灾工程',
8345:'海洋科学',
8382:'气象工程'}
print('{0:-^50}'.format('专业代号信息'))
for key,value in code_majors.items():
print(f'{key}:{value}')
print('{0:-^50}'.format('学生专业查询'))
while True:
x = input('请输入学号：')
if x == '#':
print('查询结束...')
break
else:
y = eval(x[4:8])
if y in list(code_majors.keys()):
print(f'专业是：{code_majors[y]}')
else:
print('不在这些专业中...')
print("猜猜2020年哪一天会是你的lucky day:-")
import random
lucky_day=random.randint(1,31)
x=int(lucky_day)
x1=int(input("你有三次机会，猜吧（1~31）："))
if x1==x:
print("哇，猜中了")
elif x1<x:
print("猜早啦，你的lucky day还没到呢")
x2=int(input("再猜（1~31）："))
if x2==x:
print("哇，猜中了")
elif x2<x:
print("猜早啦，你的lucky day还没到呢")
x3=int(input("再猜（1~31）："))
if x3==x:
print("哇，猜中了")
elif x3<x:
print("猜早啦，你的lucky day还没到呢")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x3>x:
print("猜晚啦，你的lucky day已经过了")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x2>x:
print("猜晚啦，你的lucky day已经过了")
x3=int(input("再猜（1~31）："))
if x3==x:
print("哇，猜中了")
elif x3<x:
print("猜早啦，你的lucky day还没到呢")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x3>x:
print("猜晚啦，你的lucky day已经过了")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x1>x:
print("猜晚啦，你的lucky day已经过了")
x2=int(input("再猜（1~31）："))
if x2==x:
print("哇，猜中了")
elif x2<x:
print("猜早啦，你的lucky day还没到呢")
x3=int(input("再猜（1~31）："))
if x3==x:
print("哇，猜中了")
elif x3<x:
print("猜早啦，你的lucky day还没到呢")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x3>x:
print("猜晚啦，你的lucky day已经过了")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x2>x:
print("猜晚啦，你的lucky day已经过了")
x3=int(input("再猜（1~31）："))
if x3==x:
print("哇，猜中了")
elif x3<x:
print("猜早啦，你的lucky day还没到呢")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
elif x3>x:
print("猜晚啦，你的lucky day已经过了")
print("次数用光啦")
print("偷偷告诉你，5月你的lucky day是",x,"号.good lucky：-")
datas = {'2049777001': ['篮球', '羽毛球', '美食', '漫画'],
'2049777002': ['音乐', '旅行'],
'2049777003': ['马拉松', '健身', '游戏'],
'2049777004': [],
'2049777005': ['足球', '阅读'],
'2049777006': ['发呆', '闲逛'],
'2049777007': [],
'2049777008': ['书法', '电影'],
'2049777009': ['音乐', '阅读', '电影', '漫画'],
'2049777010': ['数学', '推理', '音乐', '旅行']}
v={}
for i in datas.values():
for j in i:
v[j]=v.get(j,0)+1
x=list(v.keys())
y=list(v.values())
z=[(y[i],x[i] ) for i in range(len(x))]
for j in sorted(z,reverse=True):
print(f"{j[1]}:{j[0]}")
print('欢迎使用家用电器销售系统！')
pro=[['0001','电视机','海尔',5999.00,20],
['0002','冰箱','西门子',6998.00,15],
['0003','洗衣机','小天鹅',1999.00,10],
['0004','空调','格力',3900.00,0],
['0005','热水器','格力',688.00,30],
['0006','笔记本','联想',5699.00,10],
['0007','微波炉','苏泊尔',480.00,33],
['0008','投影仪','松下',1250.00,12],
['0009','吸尘器','飞利浦',999.00,9]]
products_cart=[]
option=input('请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账')
while option in['1','2','3',]:
if option=='1':
print('产品和价格信息如下')
print('***********************************************************')
print('%-10s' % '编号', '%-10s' % '名称', '%-10s' % '品牌', '%-10s' % '价格', '%-10s' % '库存数量')
print('-----------------------------------------------------------')
for i in range(len(pro)):
print('%-10s'%pro[i][0],'%-10s'%pro[i][1],'%-10s'%pro[i][2],'%10.2f'%pro[i][3],'%10d'%pro[i][4])
print('-----------------------------------------------------------')
elif option=='2':
pro_id=input('请输入您要购买的产品编号：')
while pro_id not in [item[0]for item in pro]:
pro_id=input('编号不存在，请重新输入您要购买的产品编号：')
count=int(input('请输入您要购买的产品数量：'))
while count > pro[int(pro_id)-1][4]:
count=input('数量超出库存。请重新输入您要购买的产品数量：')
if pro_id not in [item[0] for item in products_cart]:
products_cart.append([pro_id,count])
else:
for i in range(len(products_cart)):
if products_cart[i][0]==pro_id:
products_cart[i][1]+=count
else:
print('购物车信息如下：')
print('************************************')
print('%-10s'%'编号','%-10s'%'购买数量')
print('------------------------------------')
for i in range(len(products_cart)):
print('%-10s'%products_cart[i][0],'%6d'%products_cart[i][1])
print('------------------------------------')
option=input('操作成功！请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账。')
if len(products_cart)>0:
amount=0
for i in range(len(products_cart)):
pro_index=0
for j in range(len(pro)):
if pro[j][0]==products_cart[i][0]:
pro_index=j
break
price=pro[pro_index][3]
count=products_cart[i][1]
amount+=price*count
if 5000 < amount <= 10000:
amount=amount*0.95
elif 10000 < amount <= 20000:
amount = amount * 0.9
elif 20000 < amount :
amount = amount * 0.85
else:
amount=amount*1
print('购买成功，您需要支付%8.2f元'%amount)
print('谢谢您的光临，下次再见！')
print('欢迎使用家用电器销售系统！')
pro=[['0001','电视机','海尔',5999.00,20],
['0002','冰箱','西门子',6998.00,15],
['0003','洗衣机','小天鹅',1999.00,10],
['0004','空调','格力',3900.00,0],
['0005','热水器','格力',688.00,30],
['0006','笔记本','联想',5699.00,10],
['0007','微波炉','苏泊尔',480.00,33],
['0008','投影仪','松下',1250.00,12],
['0009','吸尘器','飞利浦',999.00,9]]
products_cart=[]
option=input('请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账')
while option in['1','2','3',]:
if option=='1':
print('产品和价格信息如下')
print('***********************************************************')
print('{:<10} {:<10} {:<10} {:<10} {:<10}'.format('编号','名称','品牌','价格','库存数量'))
print('-----------------------------------------------------------')
for i in range(len(pro)):
print('{:<10}'.format(pro[i][0]), '{:<10}'.format(pro[i][1]), '{:<10}'.format(pro[i][2]),
'{:<10.2f}'.format(pro[i][3]),
'{:>10}'.format(pro[i][4]))
print('-----------------------------------------------------------')
elif option=='2':
pro_id=input('请输入您要购买的产品编号：')
while pro_id not in [item[0]for item in pro]:
pro_id=input('编号不存在，请重新输入您要购买的产品编号：')
count=int(input('请输入您要购买的产品数量：'))
while count > pro[int(pro_id)-1][4]:
count=input('数量超出库存。请重新输入您要购买的产品数量：')
if pro_id not in [item[0] for item in products_cart]:
products_cart.append([pro_id,count])
else:
for i in range(len(products_cart)):
if products_cart[i][0]==pro_id:
products_cart[i][1]+=count
else:
print('购物车信息如下：')
print('************************************')
print('{:<10} {:<10} '.format('编号','购买数量'))
print('------------------------------------')
for i in range(len(products_cart)):
print('{:10s}'.format(products_cart[i][0]),'{:6d}'.format(products_cart[i][1]))
print('------------------------------------')
option=input('操作成功！请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账。')
if len(products_cart)>0:
amount=0
for i in range(len(products_cart)):
pro_index=0
for j in range(len(pro)):
if pro[j][0]==products_cart[i][0]:
pro_index=j
break
price=pro[pro_index][3]
count=products_cart[i][1]
amount+=price*count
if 5000 < amount <= 10000:
amount=amount*0.95
elif 10000 < amount <= 20000:
amount = amount * 0.9
elif 20000 < amount :
amount = amount * 0.85
else:
amount=amount*1
print('购买成功您需要支付{:8.2f}元'.format(amount))
print('谢谢您的光临，下次再见！')
print('欢迎使用家用电器销售系统！')
pro=[{'id':'0001','name':'电视机','brand':'海尔','price':5999.00,'count':20},
{'id':'0002','name':'冰箱','brand':'西门子','price':6998.00,'count':15},
{'id':'0003','name':'洗衣机','brand':'小天鹅','price':1999.00,'count':10},
{'id':'0004','name':'空调','brand':'格力','price':3900.00,'count':0},
{'id':'0005','name':'热水器','brand':'格力','price':688.00,'count':30},
{'id':'0006','name':'笔记本','brand':'联想','price':5699.00,'count':10},
{'id':'0007','name':'微波炉','brand':'苏泊尔','price':480.00,'count':33},
{'id':'0008','name':'投影仪','brand':'松下','price':1250.00,'count':12},
{'id':'0009','name':'吸尘器','brand':'飞利浦','price':999.00,'count':9}
]
products_cart=[]
option=input('请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账')
while option in['1','2','3',]:
if option=='1':
print('产品和价格信息如下')
print('***********************************************************')
print('%-10s' % '编号', '%-10s' % '名称', '%-10s' % '品牌', '%-10s' % '价格', '%-10s' % '库存数量')
print('-----------------------------------------------------------')
for i in range(len(pro)):
print('%-10s'%pro[i]['id'],'%-10s'%pro[i]['name'],'%-10s'%pro[i]['brand'],'%10.2f'%pro[i]['price'],'%10d'%pro[i]['count'])
print('-----------------------------------------------------------')
elif option == '2':
pro_id = input('请输入您要购买的产品编号：')
while pro_id not in [item['id'] for item in pro]:
pro_id = input('编号不存在，请重新输入您要购买的产品编号：')
count=int(input('请输入您要购买的产品数量：'))
while count > pro[int(pro_id)-1]['count']:
count=input('数量超出库存。请重新输入您要购买的产品数量：')
if pro_id not in [item['id'] for item in products_cart]:
products_cart.append({'id':pro_id,'count':count})
else:
for i in range(len(products_cart)):
if products_cart[i].get('id')==pro_id:
products_cart[i]['count']+=count
for i in range(len(pro)) :
if pro[i]['id']==pro_id:
pro[i]['count']-=count
else:
print('购物车信息如下：')
print('************************************')
print('%-10s'%'编号','%-10s'%'购买数量')
print('------------------------------------')
for i in range(len(products_cart)):
print('%-10s'%products_cart[i]['id'],'%6d'%products_cart[i]['count'])
print('------------------------------------')
option = input('操作成功！请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账。')
if len(products_cart)>0:
amount=0
for i in range(len(products_cart)):
pro_index=0
for j in range(len(pro)):
if pro[j]['id']==products_cart[i]['id']:
pro_index=j
break
price=pro[pro_index]['price']
count=products_cart[i]['count']
amount+=price*count
if 5000 < amount <= 10000:
amount = amount * 0.95
elif 10000 < amount <= 20000:
amount = amount * 0.9
elif 20000 < amount:
amount = amount * 0.85
else:
amount = amount * 1
print('购买成功，您需要支付%8.2f元' % amount)
print('谢谢您的光临，下次再见！')
print('欢迎使用家用电器销售系统！')
pro=[{'id':'0001','name':'电视机','brand':'海尔','price':5999.00,'count':20},
{'id':'0002','name':'冰箱','brand':'西门子','price':6998.00,'count':15},
{'id':'0003','name':'洗衣机','brand':'小天鹅','price':1999.00,'count':10},
{'id':'0004','name':'空调','brand':'格力','price':3900.00,'count':0},
{'id':'0005','name':'热水器','brand':'格力','price':688.00,'count':30},
{'id':'0006','name':'笔记本','brand':'联想','price':5699.00,'count':10},
{'id':'0007','name':'微波炉','brand':'苏泊尔','price':480.00,'count':33},
{'id':'0008','name':'投影仪','brand':'松下','price':1250.00,'count':12},
{'id':'0009','name':'吸尘器','brand':'飞利浦','price':999.00,'count':9}
]
products_cart=[]
option=input('请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账')
while option in['1','2','3',]:
if option=='1':
print('产品和价格信息如下')
print('***********************************************************')
print('{:<10} {:<10} {:<10} {:<10} {:<10}'.format('编号','名称','品牌','价格','库存数量'))
print('-----------------------------------------------------------')
for i in range(len(pro)):
print('{:<10}'.format(pro[i]['id']), '{:<10}'.format(pro[i]['name']), '{:<10}'.format(pro[i]['brand']),
'{:<10.2f}'.format(pro[i]['price']),
'{:>10}'.format(pro[i]['count']))
print('-----------------------------------------------------------')
elif option == '2':
pro_id = input('请输入您要购买的产品编号：')
while pro_id not in [item['id'] for item in pro]:
pro_id = input('编号不存在，请重新输入您要购买的产品编号：')
count=int(input('请输入您要购买的产品数量：'))
while count > pro[int(pro_id)-1]['count']:
count=input('数量超出库存。请重新输入您要购买的产品数量：')
if pro_id not in [item['id'] for item in products_cart]:
products_cart.append({'id':pro_id,'count':count})
else:
for i in range(len(products_cart)):
if products_cart[i].get('id')==pro_id:
products_cart[i]['count']+=count
for i in range(len(pro)) :
if pro[i]['id']==pro_id:
pro[i]['count']-=count
else:
print('购物车信息如下：')
print('************************************')
print('{:<10} {:<10} '.format('编号','购买数量'))
print('------------------------------------')
for i in range(len(products_cart)):
print('{:10s}'.format(products_cart[i]['id']),'{:6d}'.format(products_cart[i]['count']))
print('------------------------------------')
option = input('操作成功！请选择您的操作：1-查看商品；2-购物；3-查看购物车；其他-结账。')
if len(products_cart)>0:
amount=0
for i in range(len(products_cart)):
pro_index=0
for j in range(len(pro)):
if pro[j]['id']==products_cart[i]['id']:
pro_index=j
break
price=pro[pro_index]['price']
count=products_cart[i]['count']
amount+=price*count
if 5000 < amount <= 10000:
amount = amount * 0.95
elif 10000 < amount <= 20000:
amount = amount * 0.9
elif 20000 < amount:
amount = amount * 0.85
else:
amount = amount * 1
print('购买成功您需要支付{:8.2f}元'.format(amount))
print('谢谢您的光临，下次再见！')
标签：count,pro,cart,实验,print,products,id From： https://www.cnblogs.com/yhyy/p/17332352.html