实验任务一:
实验源码：
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)
实验截图：
问题1： random.randint(0,100) 生成的随机整数范围是？能否取到100？
0-100 能取到一百
问题2：利用 list(range(5)) 生成的有序序列范围是？是否包括5？利用 list(range(1,5)) 生成的有序序列范围是？是否包括5？
0-4 不能取到5 1-4 不包括5
问题3：使用line8代码生成的集合s1，len(s1)一定是5吗？如果不是，请解释原因。
不一定 有可能生成两个2相同的随机数，而在集合中相同的数只会保留一个
问题4：使用line12-14生成的集合s2，len(s2)一定是5吗？如果不是，请解释原因
是
实验任务二：
task2_1.py
实验源码：
# 列表遍历
lst = [55, 92, 88, 79, 96]
# 遍历方式1: 使用while + 索引
i = 0
while i < len(lst):
print(lst[i], end = ' ')
i += 1
print()
# 遍历方式2：使用for + 索引
for i in range(len(lst)):
print(lst[i], end = ' ')
print()
# 遍历方式3： 使用for...in
for i in lst:
print(i , end = ' ')
print()
实验截图：
task2_2.py
实验源码：
# 字典遍历
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
}
# 遍历key-value对：实现方式1
for key, value in book_info.items():
print(f'{key}: {value}')
print()
# 遍历key-value对：实现方式2
for item in book_info.items():
print(f'{item[0]}: {item[1]}')
print()
# 遍历值：实现方式1
for value in book_info.values():
print(value, end = ' ')
print()
# 遍历值: 实现方式2
for key in book_info.keys():
print(book_info[key], end = ' ')
实验截图：
task2_3.py
实验源码：
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'}
]
for i in range(1,6):
jh=book_infos[i-1]
j = jh['书名']
k = jh['作者']
print(f'{i}. 《{j}》, {k}')
实验截图：
试验任务三
实验源码：
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!'''
ls = [chr(i) for i in range(97,123)]
text = text.lower()
word = {}
for i in ls:
word[i] = text.count(i)
num_list = [(x[1],x[0]) for x in word.items()]
num_lists=sorted(num_list,reverse=True)
for j in num_lists:
print(f'{j[1]}:{j[0]}')
实验截图：
实验任务四
实验源码：
'''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'''
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('{:-^50}'.format('专业代号信息'))
for key,value in code_majors.items():
print(f'{key}:{value}')
print('{:-^50}'.format('学生专业查询'))
i = 1
while i == 1:
stu_num = input('请输入学号')
if stu_num == '#':
break
else:
zy = int(stu_num[4:8])
if zy in code_majors:
print(code_majors[zy])
else:
print('不在这些专业中')
print('查询结束...')
实验截图：
实验任务五
实验源码：
import random
lucky_num = random.randint(1,31)
print('猜猜2023年5月那一天会是你的lucky day'+chr(128521))
i = 1
num = int(input('你有三次机会，猜吧(1~31):'))
if 1<=num < lucky_num:
print('猜早啦，你的lucky day还没到呢')
elif 31>=num > lucky_num:
print('猜晚啦，你的lucky day还没到呢')
elif num == lucky_num:
print('哇，猜中了'+chr(129315))
elif num<1 or num>31:
print('地球上没有这一天啦，你是外星人吗')
while i < 3:
if num == lucky_num:
break
else:
num = int(input('再猜(1~31):'))
if 1<=num < lucky_num:
print('猜早啦，你的lucky day还没到呢')
i+=1
elif 31>=num > lucky_num:
print('猜晚啦，你的lucky day还没到呢')
i+=1
elif num == lucky_num:
print('哇，猜中了'+chr(129315))
break
elif num<1 or num>31:
print('地球上没有这一天啦，你是外星人吗')
i+=1
if num != lucky_num:
print('哇哦，次数用光啦~')
print(f'偷偷告诉你,5月你的lucky day是{lucky_num}号，good luck'+chr(128522))
实验截图：
实验任务六
实验源码：
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']
}
ls = []
qw = {}
for value in datas.values():
ls += value
st = list(set(ls))
for i in st:
qw[i]=ls.count(i)
num_list = [(x[1],x[0]) for x in qw.items()]
f_num_list = sorted(num_list,reverse=True)
for j in f_num_list:
print(f'{j[1]}:{j[0]}')
实验截图：
实验任务七
task7_1
实验源码
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！')
实验截图
task7_2
实验源码
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！')
实验任务八
task8_1
实验源码
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！')
实验截图
task8_2
实验源码
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！')
实验截图
标签：语句,count,pro,编程,数据类型,cart,products,print,id From： https://www.cnblogs.com/laix/p/17332805.html