标签：文件 utf encoding open 编程 实验 print csv data
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}')
标签：文件,utf,encoding,open,编程,实验,print,csv,data 来源： https://www.cnblogs.com/xhj060/p/16285581.html
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