上市公司碳排放量的计算（分读for循环的应用）

需求：

工作中需要计算上市公司碳排放数据，需要利用分读for循环进行文本值提取，然后进行匹配和记录写入，最后需要分析汇总，用于后续的深度数据挖掘。

解决：

def read_txt(inputpath, outputpath): with open(outputpath, 'w', encoding='utf-8') as file: with open(inputpath, 'r', encoding='utf-8') as infile:

data2 = []
        for line in infile:
            data_line = line.strip("\n").split()  # 去除首尾换行符，并按空格划分
            print(data_line)
            data2.append([int(i) for i in data_line])
        print(data2)
        # 输出：[[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]]

        data = data2
        for i in range(len(data2)):
            for j in range(len(data2[i])):
                data[i][j] = str(data2[i][j])
        print(data)
        # 输出：[['1', '2', '3', '4', '5'], ['6', '7', '8', '9', '10']]

        # 写入方法
        for line in data2:
            # data = '' + '\t'.join(str(i) for i in line) + '\n'  # 用\t隔开
            data = '' + ' '.join(str(i) for i in line) + '\n'  # 用空格隔开
            file.write(data)

if name == "main": input_path = '1.txt' output_path = '2.txt' read_txt(input_path, output_path)

数据来源： ​​上市公司碳排放数据