实验三
1.实验任务1
task1.py
程序源代码：
1 import random 2 print('用列表存储随机整数：') 3 lst =[random.randint(0,100) for i in range(5)] 4 print(lst) 5 print('\n用集合存储随机整数：') 6 s1 = {random.randint(0,100) for i in range(5)} 7 print(s1) 8 print('\n用集合存储随机整数：') 9 s2 = set() 10 while len(s2)<5: 11 s2.add(random.randint(0,100)) 12 print(s2)
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关于问题回答:
(1)问题1：（0，100）可以
(2)问题2：一、list(range(5))的范围是[0,4]，不包括5
二、list(range(1,5))的范围是[1,4],也不包括5
(3)问题3：不一定，取不到0
(4)问题4：一定
2.实验任务2
task2-1.py
程序源代码：
1 lst =[55,92,88,79,96] 2 i =0 3 while i<len(lst): 4 print(lst[i],end = ' ') 5 i+=1 6 print() 7 for i in range(len(lst)): 8 print(lst[i],end=' ') 9 print() 10 for i in lst: 11 print(i,end=' ') 12 print()
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task2-2.py
程序源代码：
1 book_info ={'isbn':'978-7-5356-8297-0','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} 2 3 for key,value in book_info.items(): 4 print(f'{key}:{value}') 5 print() 6 7 for item in book_info.items(): 8 print(f'{item[0]}:{item[1]}') 9 print() 10 11 for value in book_info.values(): 12 print(value,end=' ') 13 print() 14 15 for key in book_info.keys(): 16 print(book_info[key],end=' ')
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task2-3.py
程序源代码：
1 book_infos = [{'书名': '昨日的世界', '作者': '斯蒂芬.茨威格'}, 2 {'书名': '局外人', '作者': '阿尔贝.加缪'}, 3 {'书名': '设计中的设计', '作者': '原研哉'}, 4 {'书名': '万历十五年', '作者': '黄仁宇'}, 5 {'书名': '刀锋', '作者': '毛姆'}] 6 7 i = 0 8 while i<len(book_infos): 9 print('{}.'.format(i+1),end='') 10 new_dict = book_infos[i] 11 for value in new_dict.values(): 12 if value ==new_dict['书名']: 13 print('《{}》,'.format(value),end='') 14 else: 15 print(value) 16 i+=1
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3.实验任务3
task3.py
程序源代码：
1 import string 2 ts = '''The Zen of Python, by Tim Peters 3 4 Beautiful is better than ugly. 5 Explicit is better than implicit. 6 Simple is better than complex. 7 Complex is better than complicated. 8 Flat is better than nested. 9 Sparse is better than dense. 10 Readability counts. 11 Special cases aren't special enough to break the rules. 12 Although practicality beats purity. 13 Errors should never pass silently. 14 Unless explicitly silenced. 15 In the face of ambiguity, refuse the temptation to guess. 16 There should be one-- and preferably only one --obvious way to do it. 17 Although that way may not be obvious at first unless you're Dutch. 18 Now is better than never. 19 Although never is often better than *right* now. 20 If the implementation is hard to explain, it's a bad idea. 21 If the implementation is easy to explain, it may be a good idea. 22 Namespaces are one honking great idea -- let's do more of those! 23 ''' 24 newts = ts.lower() 25 d ={} 26 ls1 = [] 27 ls2 = [] 28 for i in string.ascii_lowercase: 29 n = newts.count(i) 30 ls1.append(i) 31 ls2.append(n) 32 for i in range(1,len(ls1)): 33 for n in range(0,len(ls1)-i): 34 if ls2[n]<ls2[n+1]: 35 ls2[n],ls2[n+1]=ls2[n+1],ls2[n] 36 ls1[n],ls1[n+1]=ls1[n+1],ls1[n] 37 i=0 38 while i<len(ls1): 39 print('{}:{}'.format(ls1[i],ls2[i])) 40 i+=1
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4.实验任务4
task4.py
运行源代码：
1 d = {8326:'地信类', 2 8329:'计算机类', 3 8330:'气科类', 4 8336:'防灾工程', 5 8345:'海洋科学', 6 8382:'气象工程'} 7 print('专业代号信息'.center(50,'-')) 8 for key in d.keys(): 9 print('{}:{}'.format(key,d[key])) 10 print('学生专业查询'.center(50,'-')) 11 12 while True: 13 xh = str(input('请输入学号：')) 14 if xh =='#': 15 print('查询结束...') 16 break 17 else: 18 if int(xh[4:8]) in d: 19 print('专业是：{}'.format(d[int(xh[4:8])])) 20 elif int(xh[4:8]) not in d: 21 print('不在这些专业中...')
程序运行截图：
5.实验任务5
task5.py
实验源代码：
1 import random 2 re_day = random.randint(1,31) 3 print('猜猜2023年5月哪一天会是你的lucky day🥰') 4 day = int(input('你有三次机会，猜吧(1~31):')) 5 i = 1 6 while i <3: 7 if day == re_day: 8 print('哇，猜中了🥳') 9 break 10 elif day>31 or day<=0: 11 print('地球上没有那一天啦，你是外星人吗') 12 day = int(input('再猜(1~31):')) 13 i+=1 14 elif day < re_day: 15 print('猜早了，你的lucky day还没到呢') 16 day = int(input('再猜(1~31):')) 17 i+=1 18 elif day >re_day: 19 print('猜晚啦，你的lucky day已经过啦') 20 day = int(input('再猜(1~31):')) 21 i+=1 22 if i== 3: 23 print('偷偷告诉你，五月你的lucky day是{}号.good luck😊'.format(re_day))
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6.实验任务6
task6.py
程序源代码：
1 datas = {'2049777001': ['篮球', '羽毛球', '美食', '漫画'], 2 '2049777002': ['音乐', '旅行'], 3 '2049777003': ['马拉松', '健身', '游戏'], 4 '2049777004': [], 5 '2049777005': ['足球', '阅读'], 6 '2049777006': ['发呆', '闲逛'], 7 '2049777007': [], 8 '2049777008': ['书法', '电影'], 9 '2049777009': ['音乐', '阅读', '电影', '漫画'], 10 '2049777010': ['数学', '推理', '音乐', '旅行']} 11 d = {} 12 ls=[] 13 ls1=[] 14 ls2=[] 15 for value in datas.values(): 16 for i in value: 17 ls.append(i) 18 for i in ls: 19 n = ls.count(i) 20 d.setdefault(i,n) 21 for key,value in d.items(): 22 ls1.append(key) 23 ls2.append(value) 24 for i in range(1,len(ls1)): 25 for n in range(0,len(ls1)-i): 26 if ls2[n]<ls2[n+1]: 27 ls2[n],ls2[n+1]=ls2[n+1],ls2[n] 28 ls1[n],ls1[n+1]=ls1[n+1],ls1[n] 29 i=0 30 while i<len(ls1): 31 print('{}:{}'.format(ls1[i],ls2[i])) 32 i+=1
运行程序截图：
7.实验任务7
task7.1.py
程序源代码：
""" 家用电器销售系统 v1.3 """ print('欢迎使用家用电器销售系统！') products=[ ['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(products)): print('%-10s'%products[i][0],'%-10s'%products[i][1],'%-10s'%products[i][2], '%10.2f'%products[i][3],'%10d'%products[i][4]) print('--------------------------------------------------------------') elif option=='2': product_id=input('请输入您要购买的产品编号：') while product_id not in [item[0] for item in products]: product_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>products[int(product_id)-1][4]: count=int(input('数量超出库存，请重新输入您要购买的产品数量：')) if product_id not in [item[0] for item in products_cart]: products_cart.append([product_id,count]) else: for i in range(len(products_cart)): if products_cart[i][0]==product_id: products_cart[i][1]+=count for i in range(len(products)): if products[i][0]==product_id: products[i][4]-=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)): product_index=0 for j in range(len(products)): if products[j][0]==products_cart[i][0]: product_index=j break price=products[product_index][3] count=products_cart[i][1] amount+=price*count if 5000<amount<=10000: amount=amount*0.95 elif 10000<amount<=20000: amount=amount*0.90 elif amount>20000: 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！')
运行程序截图：
task7.2.py
程序源代码：
1 """ 2 家用电器销售系统 3 v1.3 4 """ 5 6 7 print('欢迎使用家用电器销售系统！') 8 9 10 products=[ 11 ['0001','电视机','海尔',5999.00,20], 12 ['0002','冰箱','西门子',6998.00,15], 13 ['0003','洗衣机','小天鹅',1999.00,10], 14 ['0004','空调','格力',3900.00,0], 15 ['0005','热水器','格力',688.00,30], 16 ['0006','笔记本','联想',5699.00,10], 17 ['0007','微波炉','苏泊尔',480.00,33], 18 ['0008','投影仪','松下',1250.00,12], 19 ['0009','吸尘器','飞利浦',999.00,9] 20 ] 21 22 products_cart=[] 23 24 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') 25 while option in['1','2','3']: 26 if option=='1': 27 28 print('产品和价格信息如下：') 29 print('**************************************************************') 30 print(f"{'编号':<10s}{'名称':<10s}{'品牌':<10s}{'价格':<10s}{'库存数量':<10s}") 31 print('--------------------------------------------------------------') 32 for i in range(len(products)): 33 print(f'{products[i][0]:<10s}{products[i][1]:<10s}{products[i][2]:<10s}{products[i][3]:<15.2f}{products[i][4]:<10d}') 34 print('--------------------------------------------------------------') 35 elif option=='2': 36 product_id=input('请输入您要购买的产品编号：') 37 while product_id not in [item[0] for item in products]: 38 product_id=input('编号不存在，请重新输入您要购买的产品编号：') 39 40 count=int(input('请输入您要购买的产品数量：')) 41 while count>products[int(product_id)-1][4]: 42 count=int(input('数量超出库存，请重新输入您要购买的产品数量：')) 43 44 45 if product_id not in [item[0] for item in products_cart]: 46 products_cart.append([product_id,count]) 47 else: 48 for i in range(len(products_cart)): 49 if products_cart[i][0]==product_id: 50 products_cart[i][1]+=count 51 52 53 for i in range(len(products)): 54 if products[i][0]==product_id: 55 products[i][4]-=count 56 else: 57 print('购物车信息如下：') 58 print('******************************') 59 print(f"{'编号':<10s}{'购买数量':<10s}") 60 print('------------------------------') 61 for i in range(len(products_cart)): 62 print(f'{products_cart[i][0]:<15s}{products_cart[i][1]:<6d}') 63 print('------------------------------') 64 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') 65 66 67 if len(products_cart)>0: 68 amount=0 69 for i in range(len(products_cart)): 70 product_index=0 71 for j in range(len(products)): 72 if products[j][0]==products_cart[i][0]: 73 product_index=j 74 break 75 price=products[product_index][3] 76 count=products_cart[i][1] 77 amount+=price*count 78 79 if 5000<amount<=10000: 80 amount=amount*0.95 81 elif 10000<amount<=20000: 82 amount=amount*0.90 83 elif amount>20000: 84 amount=amount*0.85 85 else: 86 amount=amount*1 87 print(f'购买成功，您需要支付{amount:<8.2f}元') 88 89 90 print('谢谢您的光临，下次再见！')
运行程序截图：
8.实验任务8
task8.1.py
程序源代码：
1 """ 2 家用电器销售系统 3 v1.4 4 """ 5 6 print('欢迎使用家用电器销售系统！') 7 8 9 products=[ 10 {'id':'0001','name':'电视机','brand':'海尔','price':5999.00,'count':20}, 11 {'id':'0002','name':'冰箱','brand':'西门子','price':6998.00,'count':15}, 12 {'id':'0003','name':'洗衣机','brand':'小天鹅','price':1999.00,'count':10}, 13 {'id':'0004','name':'空调','brand':'格力','price':3900.00,'count':0}, 14 {'id':'0005','name':'热水器','brand':'格力','price':688.00,'count':30}, 15 {'id':'0006','name':'笔记本','brand':'联想','price':5699.00,'count':10}, 16 {'id':'0007','name':'微波炉','brand':'苏泊尔','price':480.00,'count':33}, 17 {'id':'0008','name':'投影仪','brand':'松下','price':1250.00,'count':12}, 18 {'id':'0009','name':'吸尘器','brand':'飞利浦','price':999.00,'count':9}, 19 ] 20 21 22 products_cart=[] 23 24 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') 25 while option in['1','2','3']: 26 if option=='1': 27 28 print('产品和价格信息如下：') 29 print('**************************************************************') 30 print('%-10s'%'编号', '%-10s'%'名称', '%-10s' %'品牌', '%-10s'%' 价格', 31 '%-10s'%'库存数量') 32 print('--------------------------------------------------------------') 33 for i in range(len(products)): 34 print('%-10s'%products[i]['id'],'%-10s'%products[i]['name'], 35 '%-10s'%products[i]['brand'],'%10.2f'%products[i]['price'], 36 '%10d'%products[i]['count']) 37 print('--------------------------------------------------------------') 38 elif option=='2': 39 product_id=input('请输入您要购买的产品编号：') 40 while product_id not in [item['id'] for item in products]: 41 product_id=input('编号不存在，请重新输入您要购买的产品编号：') 42 43 count=int(input('请输入您要购买的产品数量：')) 44 while count>products[int(product_id)-1]['count']: 45 count=int(input('数量超出库存，请重新输入您要购买的产品数量：')) 46 47 if product_id not in [item['id'] for item in products_cart]: 48 products_cart.append({'id':product_id,'count':count}) 49 else: 50 for i in range(len(products_cart)): 51 if products_cart[i].get('id')==product_id: 52 products_cart[i]['count']+=count 53 54 for i in range(len(products)): 55 if products[i]['id']==product_id: 56 products[i]['count']-=count 57 else: 58 print('购物车信息如下：') 59 print('******************************') 60 print('%-10s'%'编号','%-10s'%'购买数量') 61 print('------------------------------') 62 for i in range(len(products_cart)): 63 print('%-10s'%products_cart[i]['id'],'%6d'%products_cart[i]['count']) 64 print('------------------------------') 65 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') 66 67 if len(products_cart)>0: 68 amount=0 69 for i in range(len(products_cart)): 70 product_index=0 71 for j in range(len(products)): 72 if products[j]['id']==products_cart[i]['id']: 73 product_index=j 74 break 75 price=products[product_index]['price'] 76 count=products_cart[i]['count'] 77 amount+=price*count 78 79 if 5000<amount<=10000: 80 amount=amount*0.95 81 elif 10000<amount<=20000: 82 amount=amount*0.90 83 elif amount>20000: 84 amount=amount*0.85 85 else: 86 amount=amount*1 87 print('购买成功，您需要支付%8.2f元'%amount) 88 89 90 print('谢谢您的光临，下次再见！')
运行程序截图：
task8.2.py
程序源代码：
""" 家用电器销售系统 v1.4 """ print('欢迎使用家用电器销售系统！') products=[ {'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(f"{'编号':<10s}{'名称':<10s}{'品牌':<10s}{'价格':<10s}{'库存数量':<10s}") print('--------------------------------------------------------------') for i in range(len(products)): print(f"{products[i]['id']:<10s}{products[i]['name']:<10s}{products[i]['brand']:<10s}{products[i]['price']:<15.2f}{products[i]['count']:<10d}") print('--------------------------------------------------------------') elif option=='2': product_id=input('请输入您要购买的产品编号：') while product_id not in [item['id'] for item in products]: product_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>products[int(product_id)-1]['count']: count=int(input('数量超出库存，请重新输入您要购买的产品数量：')) if product_id not in [item['id'] for item in products_cart]: products_cart.append({'id':product_id,'count':count}) else: for i in range(len(products_cart)): if products_cart[i].get('id')==product_id: products_cart[i]['count']+=count for i in range(len(products)): if products[i]['id']==product_id: products[i]['count']-=count else: print('购物车信息如下：') print('******************************') print(f"{'编号':<15s}{'购买数量':<6s}") print('------------------------------') for i in range(len(products_cart)): print(f"{products_cart[i]['id']:<10s}{products_cart[i]['count']:<6d}") 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)): product_index=0 for j in range(len(products)): if products[j]['id']==products_cart[i]['id']: product_index=j break price=products[product_index]['price'] count=products_cart[i]['count'] amount+=price*count if 5000<amount<=10000: amount=amount*0.95 elif 10000<amount<=20000: amount=amount*0.90 elif amount>20000: amount=amount*0.85 else: amount=amount*1 print(f'购买成功，您需要支付{amount:<8.2f}元') print('谢谢您的光临，下次再见！')
运行程序截图：
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