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2019-04-03将提取的数据保存到CSV文件中

2019-04-03将提取的数据保存到CSV文件中

作者: 小鱼儿spr | 来源:发表于2019-04-03 17:34 被阅读0次

    将list里的数据保存到CSV文件中,如果list文件中嵌套有list格式的数据,可以按照以下方式来处理:
    给出示例代码:

    import csv
    lists = [[1,2,3],[4,5,6],[7,8,9]]
    with open(filepath,"a+",newline='',encoding='utf-8-sig') as f:  #不在出现空行
            csv_writer = csv.writer(f)
            for l in lists:
                print(l)
                csv_writer.writerow(l)
    #list表的元素不能是int哦
    
    dict类型保存到csv
    

    headers=['moduleName', 'fileType', 'fileName', 'filePath', 'resourceId', 'textStr', 'translateStr']
    m = [{'moduleName': 'lib_image_for_qzone', 'fileType': '.java', 'fileName': 'ImageTaskConst.java', 'filePath': '/lib_image_for_qzone/src/com/tencent/component/media/image/ImageTaskConst.java', 'resourceId': 'qqstr_1568118355604_595', 'textStr': '问题描述', 'translateStr': ''}, {'moduleName': 'lib_image_for_qzone', 'fileType': '.java', 'fileName': 'ImageTaskConst.java', 'filePath': '/lib_image_for_qzone/src/com/tencent/component/media/image/ImageTaskConst.java', 'resourceId': 'qqstr_1568118355604_706', 'textStr': '下载器未知错误', 'translateStr': ''}]

    >>> new = []
    >>> for i in m:
        newdict = {}
        newdict['textStr'] = i['textStr']
        new.append(newdict)
    with open('D:\\sss.csv','w') as f:
        writer = csv.DictWriter(f, ['textStr'])
        writer.writeheader()
        for row in new:
            writer.writerow(row)
    

    另一种方法:
    使用pandas dataframe

    >>> import pandas as pd
    >>> lists = [[1,2,3],[4,5,6],[7,8,9]]
    >>> import numpy as np
    >>> t = np.array(lists)
    >>> t
    array([[1, 2, 3],
           [4, 5, 6],
           [7, 8, 9]])
    >>> data = pd.DataFrame(t)
    >>> data
       0  1  2
    0  1  2  3
    1  4  5  6
    2  7  8  9
    >>> data.columns=['a','b','c']
    >>> data
       a  b  c
    0  1  2  3
    1  4  5  6
    2  7  8  9
    >>> data.to_csv("e:/test.csv")
    

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