实验5 文件应用编程

实验任务3：

 1 with open('data3.txt','r',encoding='utf-8') as f:  2     date=[]  3     for line in f.readlines():  4         line=line.strip()  5         date.append(line)  6 date.pop(0)  7 print('原始数据:')  8 print('['+','.join(date)+']')  9 with open('data3_processed.txt','w',encoding='utf-8') as f: 10      date1=[] 11      for i in date: 12         i=eval(i) 13         if i-int(i)<0.5: 14             i=int(i) 15         else: 16             i=int(i)+1 17         date1.append(i) 18      date.insert(0,'原始数据') 19      date1.insert(0,'四舍五入后数据') 20      for i in range(len(date)): 21         f.write(f{date[i]}\t{date1[i]}\n) 22 date1.pop(0) 23 print('四舍五入后数据:') 24 print(date1)

 实验任务4：
 1 with open('data4.txt', 'r', encoding='utf-8') as f:  2     date=[]  3     for line in f.readlines():  4         line=line.split()  5         date.append(line)  6     a=date.pop(0)  7     date2=sorted(date,key=lambda x:(x[2],-int(x[3])))  8 with open('data4_processed.txt','w',encoding='utf-8') as f:  9     date2.insert(0,a) 10     for i in date2: 11         f.write('\t'.join(i)+'\n') 12         for j in i: 13             print('%-5s\t'%j,end='') 14         print()

 实验任务5：
 1 with open('data5.txt', 'r', encoding='utf-8') as f:  2     list=''.join([i for i in f])  3     hang=len(list.splitlines())  4     words=len(list.split())  5     kong=list.count(' ')  6     zifu=len(list)  7     print('行数:',hang)  8     print('单词数:',words)  9     print('空格数:',kong) 10     print('字符数:',zifu) 11 with open('data5_with_line.txt','w',encoding='utf-8') as f: 12     for i in range(hang): 13         f.write('{} {}'.format(i+1,list.split('\n')[i])) 14         f.write('\n')

 

实验总结：

1、学习了如何编写与文件有关的代码；

2、这次的实验比较综合，将前面几章的学习内容结合在一起，我运用的不是很熟练。