Python：如何解析包含空值的CSV文件？

我有一个包含二进制字段的csv文件，当我通过

csv.reader（f）

读取它时，我得到

包含空值的

我在网上尝试过各种各样的解决方案，比如，但还是会出现同样的错误。我设法逐行阅读，并通过

，

将其分开，但有些字段中也包含

，

，因此我想知道如何读取和提取列？一行的示例如下所示：

212344408,"cp233.net","net","cp233","clientTransferProhibited,ClientDeleteProhibited","ENAME TECHNOLOGY CO., LTD.",1331,"DNS1.IIDNS.COM","DNS2.IIDNS.COM","2017-02-14","2018-02-14","2017-02-14","WANG MIN CHUN","wangminchun","WANG MIN CHUN","wangminchun","957596578@QQ.COM","QUANZHOUSHIANXIXIANCHANGKENGXIANGHUAMEICUN","QUAN ZHOU HI","FU,JIAN","362421","CN","+86.59523128184","+86.59523128184","%^^<AD>!^S\0<A8>E<98><AC>/^<A5><A0><C9>7","WANG MIN CHUN","WANG MIN CHUN","957596578@QQ.COM","WANG MIN CHUN","WANG MIN CHUN","957596578@QQ.COM",0,"2017-03-14 21:33:15","2017-03-12 20:44:02",0,"whois_zone_snr","2017-03-14 21:33:15",\N

212344408，“cp233.net”，“net”，“cp233”，“禁止客户转让，禁止客户删除”，“艾美科技有限公司”，1331，“DNS1.IIDNS.COM”，“DNS2.IIDNS.COM”，“2017-02-14”，“2018-02-14”，“2017-02-14”，“王敏春”，“王敏春”，“王敏春”，“王敏春”957596578@QQ.COM“，”泉州市西安县长坑乡花梅村“，”泉州市喜“，”福、健“，“362421”、“CN”、“+86.59523128184”、“+86.59523128184”、“%^^ ^^S\0E/^7“，”王敏春“，”王敏春“，”957596578@QQ.COM“，”王敏春“，”王敏春“，”957596578@QQ.COM“，0，“2017-03-14 21:33:15”，“2017-03-12 20:44:02”，0，“谁是区”，2017-03-14 21:33:15“，\N

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如果有任何建议，我将不胜感激。

熊猫对我的案例非常有用，它可以检索文件并跳过那些因为奇怪字符而被破坏的行

import pandas as pd

df = pandas.read_csv(filename, verbose =True , warn_bad_lines = True, error_bad_lines=False, names = header)

---

这在您的示例中效果很好，我甚至用NULL替换了一个字符串，它处理得很好

test.csv：

212344408,"cp233.net","net","cp233","clientTransferProhibited,ClientDeleteProhibited","ENAME TECHNOLOGY CO., LTD.",1331,"DNS1.IIDNS.COM","DNS2.IIDNS.COM","2017-02-14","2018-02-14","2017-02-14","WANG MIN CHUN","wangminchun","WANG MIN CHUN","wangminchun","957596578@QQ.COM","QUANZHOUSHIANXIXIANCHANGKENGXIANGHUAMEICUN","QUAN ZHOU HI","FU,JIAN","362421","CN","+86.59523128184","+86.59523128184","%^^<AD>!^S\0<A8>E<98><AC>/^<A5><A0><C9>7","WANG MIN CHUN","WANG MIN CHUN","957596578@QQ.COM","WANG MIN CHUN","WANG MIN CHUN","957596578@QQ.COM",0,"2017-03-14 21:33:15","2017-03-12 20:44:02",0,"whois_zone_snr","2017-03-14 21:33:15",\N
212344408,NULL,"net","cp233","clientTransferProhibited,ClientDeleteProhibited","ENAME TECHNOLOGY CO., LTD.",1331,"DNS1.IIDNS.COM","DNS2.IIDNS.COM","2017-02-14","2018-02-14","2017-02-14","WANG MIN CHUN","wangminchun","WANG MIN CHUN","wangminchun","957596578@QQ.COM","QUANZHOUSHIANXIXIANCHANGKENGXIANGHUAMEICUN","QUAN ZHOU HI","FU,JIAN","362421","CN","+86.59523128184","+86.59523128184","%^^<AD>!^S\0<A8>E<98><AC>/^<A5><A0><C9>7","WANG MIN CHUN","WANG MIN CHUN","957596578@QQ.COM","WANG MIN CHUN","WANG MIN CHUN","957596578@QQ.COM",0,"2017-03-14 21:33:15","2017-03-12 20:44:02",0,"whois_zone_snr","2017-03-14 21:33:15",\N

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如果这不是你正在经历的行为，你能提供一行失败的代码吗？

为什么最后会有一个

\N

？你能显示你的cvs对象配置吗？@SatishGarg:这是NUL字节的常见表示法。这是Python 2还是3？你对f中的行尝试过

reader=csv.reader（line.translate（{0:None}）了吗

方法（例如，简单地删除NUL字节）？熊猫的可能重复是一种方法。上面的

df

将创建一个数据帧，这是一种更宽松的结构。因此，您不应该遇到与使用csv模块时相同的错误。

import csv
with open('test.csv', 'r') as f:
    reader = csv.reader(f)
    for row in reader:
        print(row)