实验五
task3
# Created on 刘杰的iPad. with open('data3.txt', 'r+', encoding = 'utf-8')as f: data = f.readlines() f.seek(0) f.truncate() data1 = [] for i in range(len(data)): data[i] = data[i].rstrip('\n') if i ==0: data1.append('四舍五入后的数据') else: if (float(data[i]) * 10) % 10 >= 5: x = int(float(data[i])) + 1 else: x = int(float(data[i])) data1.append(x) f.writelines(f'{data[i]: <10}\t{data1[i]: <10}\n') data.pop(0) data1.pop(0) print(f'原始数据:\n{data}') print(f'四舍五入后的数据:\n{data1}'
task4
# Created on 刘杰的iPad. with open('data4.txt', 'r', encoding='utf-8')as f: data = f.readlines() for i in range(len(data)): data[i] = data[i].split('\t') x = data.pop(0) data.sort(key=lambda ele:ele[3],reverse=True) data.sort(key=lambda ele:ele[2]) data = [x] + data with open('实验5/data4_processed.txt', 'w+', encoding='utf-8')as f: for i in range(len(data)): f.writelines('\t'.join(data[i]) + '') f.seek(0,0) data1 = f.readlines() print(''.join(data1))
task5
# Created on 刘杰的iPad. with open('data5.txt', 'r', encoding='utf-8')as f: data = f.readlines() data_str = ''.join(data) line_number = len(data) word_number = len(data_str.split()) space_number = data_str.count(' ') chars_number = len(data_str) print(f'行数:{line_number}') print(f'单词数:{word_number}') print(f'空格数:{space_number}') print(f'字符数:{chars_number}') with open('实验5/data5_with_line.txt', 'w', encoding='utf-8')as f: for i in range(len(data)): data[i] = str(i+1)+'\t'+data[i] f.writelines(''.join(data))
posted on 2022-05-16 19:25 QiQi-sakura 阅读(17) 评论(1) 编辑 收藏 举报