实验5 文件应用编程
实验任务6
task6.py
实验源码：
with open('data6.csv','r',encoding='gbk') as f: data1 = f.read().split('\n') del data1[0] for i in range(len(data1)): data1[i] = eval(data1[i]) data1[i] = float(data1[i]) print('原始数据:') print(data1) data2 = [] for i in range(len(data1)): data2.append(int(data1[i]+0.5)) print('四舍五入后数据:') print(data2) for i in range(len(data1)): data1[i] = str(data1[i]) for i in range(len(data1)): data2[i] = str(data2[i]) title = ['原始数据','四舍五入后数据'] info = [] for i in range(len(data1)): info.append([data1[i],data2[i]]) with open('data6_processed.csv','w',encoding='utf-8') as f: f.write(','.join(title)+'\n') for item in info: f.write(','.join(item)+'\n')
运行测试截图：
实验任务7
task7.py
实验源码：
with open('data7.csv','r',encoding='gbk') as f: data1 = f.read().split('\n') del data1[0] lsta = [] lstm = [] for i in data1: lst1 = i.split(',') if lst1[2] == 'Acting': lsta.append(lst1) else:lstm.append(lst1) lstm.sort(key=lambda x:x[-1],reverse = True) lsta.sort(key=lambda x:x[-1],reverse = True) info = lsta + lstm title = ['学号','姓名','专业','分数'] with open('data7_processed.csv','w',encoding='utf-8') as f: f.write(','.join(title)+'\n') for items in info: f.write(','.join(items)+'\n') print('{:<10}'.format(title[0]),'{:<10}'.format(title[1]),'{:<10}'.format(title[2]),'{:<15}'.format(title[3])) for i in info: print('{:<10}'.format(i[0]),'{:<10}'.format(i[1]),'{:<10}'.format(i[2]),'{:<15}'.format(i[3]))
运行测试截图：
实验任务8
task8.py
实验源码：
lines = 0 words = 0 sum1 = 0 space = 0 with open('hamlet.txt','r',encoding='utf-8') as f: for line in f: word = line.split() lines += 1 words += len(word) sum1 += len(line) for i in line: if i == ' ': space += 1 else: pass print('hamlet.txt粗滤统计:') print(f'行数:{lines}') print(f'单词数:{words}') print(f'字符数:{sum1}') print(f'空格数:{space}') with open('hamlet.txt','r',encoding = 'utf-8') as f: text = f.readlines() for i in range(len(text)): text[i] = str(i+1) + ' ' + text[i] with open('hamlet_with_line_number.txt','w',encoding = 'utf-8') as f: f.writelines(text)
运行测试截图：
实验任务9
task9.py
实验源码：
def is_valid(sfz): if len(sfz) != 18: return False elif (sfz[:-1].isnumeric() and sfz[-1] == 'X') or sfz.isnumeric(): return True else:return False with open('data9_id.txt','r',encoding='utf-8') as f: data = f.read().split('\n') del data[0] data2 = [] data3 =[] print('姓名,出生日期,年龄') for i in data: lst = i.split(',') data2.append(lst) lst2 = [] for i in data2: if is_valid(i[1]) == True: name = i[0] btd = i[1][6:14] age = str(2023 - int(i[1][6:10])) lst2.append([name,btd,age]) lst2.sort(key=lambda x:x[2],reverse=True) for i in lst2: print(i[0],end=',') print(f'{i[1][:4]}-{i[1][4:6]}-{i[1][6:8]}',end=',') print(i[2])
运行测试截图：
实验任务10
task10_1.py
实验源码：
with open('data10_stu.txt','r',encoding='utf-8') as f: data = f.readlines() print('{:*^40}'.format('抽点开始')) n = int(input('输入随机抽点人数:')) import random x = [] x2 = '' counts = 0 while counts < n: new = random.randint(0, len(data) - 1) if new in x: new = random.randint(0, len(data) - 1) else: counts +=1 x.append(new) for i in range(n): print(data[x[i]]) x2 += data[x[i]] sum1 += n with open('20230602.txt','w',encoding='utf-8') as f: f.writelines(x2)
运行测试截图：
task10_2.py
实验源码：
with open('data10_stu.txt','r',encoding='utf-8') as f: data = f.readlines() print('{:*^40}'.format('抽点开始')) n = int(input('输入随机抽点人数:')) import random x = [] sum1 = 0 x2 = '' while n != 0: counts = 0 while counts < n: new = random.randint(0, len(data) - 1) if new in x: new = random.randint(0, len(data) - 1) else: counts +=1 x.append(new) for i in range(sum1,sum1+n): print(data[x[i]]) x2 += data[x[i]] sum1 += n n = int(input('输入随机抽点人数:')) with open('20230602.txt','w',encoding='utf-8') as f: f.writelines(x2) print('{:*^40}'.format('抽点结束'))
运行测试截图：
