实验6 文件应用编程-2
2022/5/23 1:05:42
本文主要是介绍实验6 文件应用编程-2,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
1.实验任务1:CSV格式文件读写
task1_1.py
1 title = ['城市', '人口(万)'] 2 info = [ ['南京', '850'], 3 ['纽约', '2300'], 4 ['东京', '3800'], 5 ['巴黎', '1000'] ] 6 with open('city1.csv', 'w', encoding='utf-8') as f: 7 f.write(','.join(title) + '\n') 8 for item in info: 9 f.write(','.join(item) + '\n')
task1_2.py
1 with open('city1.csv', 'r', encoding='utf-8') as f: 2 print(f.read().rstrip('\n'))
task1_3.py
1 with open('city1.csv', 'r', encoding='utf-8') as f: 2 data = f.readlines() 3 print('data: ') 4 print(data) 5 info = [line.rstrip('\n').split(',') for line in data] 6 print('info: ') 7 print(info)
2.实验任务2
task2_1.py
1 import csv 2 title = ['城市', '人口(万)'] 3 info = [ ['南京', '850'], 4 ['纽约', '2300'], 5 ['东京', '3800'], 6 ['巴黎', '1000'] ] 7 with open('city2.csv', 'w', encoding='utf-8', newline='') as f: 8 f_writer = csv.writer(f) 9 f_writer.writerow(title) 10 f_writer.writerows(info)
task2_2.py
1 import csv 2 with open('city2.csv', 'r', encoding='utf-8') as f: 3 f_reader = csv.reader(f) 4 for line in f_reader: 5 print(line)
task2_3.py
1 import csv 2 with open('city3.csv', 'w', encoding='utf-8', newline='') as f: 3 title = ['城市', '人口'] 4 f_writer = csv.DictWriter(f, fieldnames = title) 5 f_writer.writeheader() 6 f_writer.writerow({'城市':'南京', '人口': '850万'}) 7 f_writer.writerow({'城市':'纽约', '人口': '2300万'}) 8 f_writer.writerow({'城市':'东京', '人口': '3800万'}) 9 f_writer.writerow({'城市':'巴黎', '人口': '1000万'})
task2_4.py
1 import csv 2 with open('city3.csv', 'r', encoding='utf-8') as f: 3 f_reader = csv.DictReader(f) 4 for line in f_reader: 5 print(line)
3.实验任务3身份证号码文件批量处理
1 with open('data3_id.txt', 'r', encoding='utf-8') as f: 2 data=f.readlines() 3 data=[line.strip().split(',') for line in data] 4 ans=[] 5 def isvalid(id): 6 if len(id)!=18: return False 7 else: 8 for i in id: 9 if '0'<=i<='9'or i=='X':continue 10 return False 11 return True 12 for i in range(1,len(data)): 13 if(isvalid(data[i][1])): 14 ans.append([data[i][0],data[i][1][6:10]+'-'+data[i][1][10:12]+'-'+data[i][1][12:14]]) 15 ans.sort(key=lambda x:x[1]) 16 print(f'{data[0][0]},{data[0][1]}') 17 for line in ans: 18 print(f'{line[0]},{line[1]}')
4.实验任务4
5.实验任务5
task5_1.py
1 import random 2 3 n = int(input("输入随机抽点人数: ")) 4 with open("data5.txt", encoding="utf-8") as f: 5 data = f.readlines() 6 data_ = data.copy() 7 lucky_people = [] 8 for i in range(n): 9 x = random.choice(data_) 10 lucky_people.append(x) 11 data_.remove(x) 12 with open("20220517.txt", "w+", encoding="utf-8") as f: 13 f.writelines(lucky_people) 14 f.seek(0) 15 print(f.read())
task5_2.py
1 import random 2 3 print("{0:{1}{3}{2}}".format("抽点开始", "=", 40, "^")) 4 active_input = True 5 ls = [] 6 while active_input: 7 n = int(input("输入随机抽点人数: ")) 8 if n == 0: 9 break 10 else: 11 with open("data5.txt", encoding="utf-8") as f: 12 data = f.readlines() 13 data_ = data.copy() 14 lucky_people = [] 15 for i in range(n): 16 x = random.choice(data_) 17 lucky_people.append(x) 18 data_.remove(x) 19 with open("20220517.txt", "w+", encoding="utf-8") as f: 20 f.writelines(lucky_people) 21 f.seek(0) 22 print(f.read()) 23 ls += lucky_people 24 with open("20220517.txt", "w", encoding="utf-8") as f: 25 f.writelines(ls) 26 print("{0:{1}{3}{2}}".format("抽点结束", "=", 40, "^"))
6.实验任务6
1 import os 2 print(os.getcwd()) 3 py_file_list = [ file for file in os.listdir() if file.endswith('.py') ] 4 for number, file in enumerate(py_file_list, 1): 5 print(f'{number:-3d}. {file}')
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