实验五

#task.3

with open('data3.txt', 'r+', encoding = 'utf-8') as f,open('data3_processed.txt', 'r+', encoding = 'utf-8') as ff:
    num=[line.strip('\n') for line in f]
    num.pop(0)
    num_print=[eval(i) for i in num]
    print(f'原始数据:\n{num_print}')
    num_new=[round(eval(i))for i in num]
    print(f'四舍五入后的数据:\n{num_new}')
    write1=['原始数据']+[str(i)for i in num]
    write2=['四舍五入的数据']+[str(i)for i in num_new]
    f.seek(0)
    for i in range(len(num)):
        ff.write(f'{write1[i]}\t{write2[i]}\n')

 

#task.4

with open('data4.txt', 'r+', encoding = 'utf-8') as f,open('data4_processed.txt', 'r+', encoding = 'utf-8') as ff:
    list = [i.strip('\n').split('\t') for i in f]
    a = list.pop(0)
    list.sort(key=lambda x: (x[2], -int(x[3])))
    print('\t'.join(a))
    for i in list:
        print('\t'.join(i))
    with open('data4jishiben.txt', 'w', encoding='utf-8') as f:
        ff.write('\t'.join(a))
        ff.write('\n')
        for i in list:
            ff.write('\t'.join(i))
            ff.write('\n')

#task.5

with open('data5.txt', 'r+', encoding = 'utf-8') as f,open('data5_with_line.txt', 'r+', encoding = 'utf-8') as ff:
    with open('data5.txt', 'r', encoding='utf-8') as f:
        data = ''.join([i for i in f])

    print(f'行数:{len(data.splitlines())}')
    print(f'单词数:{len(data.split())}')
    print(f'空格数:{data.count(" ")}')
    print(f'字符数:{len(data)}')
    for i in range(len(data.splitlines())):
        ff.write(str(i + 1) + ' ' + str(data.splitlines()[i]) + '\n')