Python 2.7 如何重写以下内容以避免出现“a”；“嵌套块”；错误？

下面的代码生成

SystemError:静态嵌套块过多

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我的问题是为什么会产生这个错误？我在网上搜索过，但是所有的例子都有20层深的循环嵌套。我根本没有那么多的文件I/O嵌套。我只是对一个变量进行了非常广泛的检查，并创建了两个层次的文件。我的目标是为这个特定数据集的每个不同类创建单独的“.csv”文件。还有没有更好的重写方法，这样我就可以避免系统错误？

使用字典进行选项：

import csv



with open('complexdatset.csv','r'), open ('back.csv','w'), open ('buffer_overflow.csv','w'), open ('ftp_write.csv','w'), open ('guess_passwd.csv','w'), open ('imap.csv','w'), open ('ipsweep.csv','w'), open ('land.csv','w'), open ('loadmodule.csv','w'), open ('multihop.csv','w'), open ('neptune.csv','w'), open ('nmap.csv','w'), open ('perl.csv','w'), open ('phf.csv','w'), open ('pod.csv','w'), open ('portsweep.csv','w'), open ('rootkit.csv','w'), open ('satan.csv','w'), open ('smurf.csv','w'), open ('spy.csv','w'), open ('teardrop.csv','w'), open ('warezclient.csv','w'), open ('warezmaster.csv','w') as fin, back, buffer_overflow, ftp_write, guess_passwd, imap, ipsweep, land, loadmodule, multihop, neptune, nmap, perl, phf, pod, portsweep, rootkit, satan, smurf, spy, teardrop, warezclient, warezmaster:
    writer0 = csv.writer(back, delimiter=',')
    writer1 = csv.writer(buffer_overflow, delimiter=',')
    writer2 = csv.writer(ftp_write, delimiter=',')
    writer3 = csv.writer(guess_passwd, delimiter=',')
    writer4 = csv.writer(imap, delimiter=',')
    writer5 = csv.writer(land, delimiter=',')
    writer6 = csv.writer(loadmodule, delimiter=',')
    writer7 = csv.writer(multihop, delimiter=',')
    writer8 = csv.writer(neptune, delimiter=',')
    writer9 = csv.writer(nmap, delimiter=',')
    writer10 = csv.writer(perl, delimiter=',')
    writer11 = csv.writer(phf, delimiter=',')
    writer12 = csv.writer(pod, delimiter=',')
    writer13 = csv.writer(portsweep, delimiter=',')
    writer14 = csv.writer(rootkit, delimiter=',')
    writer15 = csv.writer(satan, delimiter=',')
    writer16 = csv.writer(smurf, delimiter=',')
    writer17 = csv.writer(spy, delimiter=',')
    writer18 = csv.writer(teardrop, delimiter=',')
    writer19 = csv.writer(warezclient, delimiter=',')
    writer20 = csv.writer(warezmaster, delimiter=',')
    options = {
        'back': writer0.writerow,
        'buffer_overflow': writer1.writerow,
        'ftp_write' :  writer2.writerow,
        'guess_passwd' :  writer3.writerow,
        'imap' :writer4.writerow,
        'land':writer5.writerow,
        'loadmodule':writer6.writerow,
        'multihop':writer7.writerow,
        'neptune':writer8.writerow,
        'nmap':writer9.writerow,
        'perl':writer10.writerow,
        'phf':writer11.writerow,
        'pod':writer12.writerow,
        'portsweep':writer13.writerow,
        'rootkit':writer14.writerow,
        'satan':writer15.writerow,
        'smurf':writer16.writerow,
        'spy':writer17.writerow,
        'teardrop':writer18.writerow,
        'warezclient':writer19.writerow,
        'warezmaster':writer20.writerow,
    }
    for row in csv.reader(fin, delimiter=','):
        if row[41] in options.keys() :
            options[row[41]](row)

---

使用字典进行选项：

import csv



with open('complexdatset.csv','r'), open ('back.csv','w'), open ('buffer_overflow.csv','w'), open ('ftp_write.csv','w'), open ('guess_passwd.csv','w'), open ('imap.csv','w'), open ('ipsweep.csv','w'), open ('land.csv','w'), open ('loadmodule.csv','w'), open ('multihop.csv','w'), open ('neptune.csv','w'), open ('nmap.csv','w'), open ('perl.csv','w'), open ('phf.csv','w'), open ('pod.csv','w'), open ('portsweep.csv','w'), open ('rootkit.csv','w'), open ('satan.csv','w'), open ('smurf.csv','w'), open ('spy.csv','w'), open ('teardrop.csv','w'), open ('warezclient.csv','w'), open ('warezmaster.csv','w') as fin, back, buffer_overflow, ftp_write, guess_passwd, imap, ipsweep, land, loadmodule, multihop, neptune, nmap, perl, phf, pod, portsweep, rootkit, satan, smurf, spy, teardrop, warezclient, warezmaster:
    writer0 = csv.writer(back, delimiter=',')
    writer1 = csv.writer(buffer_overflow, delimiter=',')
    writer2 = csv.writer(ftp_write, delimiter=',')
    writer3 = csv.writer(guess_passwd, delimiter=',')
    writer4 = csv.writer(imap, delimiter=',')
    writer5 = csv.writer(land, delimiter=',')
    writer6 = csv.writer(loadmodule, delimiter=',')
    writer7 = csv.writer(multihop, delimiter=',')
    writer8 = csv.writer(neptune, delimiter=',')
    writer9 = csv.writer(nmap, delimiter=',')
    writer10 = csv.writer(perl, delimiter=',')
    writer11 = csv.writer(phf, delimiter=',')
    writer12 = csv.writer(pod, delimiter=',')
    writer13 = csv.writer(portsweep, delimiter=',')
    writer14 = csv.writer(rootkit, delimiter=',')
    writer15 = csv.writer(satan, delimiter=',')
    writer16 = csv.writer(smurf, delimiter=',')
    writer17 = csv.writer(spy, delimiter=',')
    writer18 = csv.writer(teardrop, delimiter=',')
    writer19 = csv.writer(warezclient, delimiter=',')
    writer20 = csv.writer(warezmaster, delimiter=',')
    options = {
        'back': writer0.writerow,
        'buffer_overflow': writer1.writerow,
        'ftp_write' :  writer2.writerow,
        'guess_passwd' :  writer3.writerow,
        'imap' :writer4.writerow,
        'land':writer5.writerow,
        'loadmodule':writer6.writerow,
        'multihop':writer7.writerow,
        'neptune':writer8.writerow,
        'nmap':writer9.writerow,
        'perl':writer10.writerow,
        'phf':writer11.writerow,
        'pod':writer12.writerow,
        'portsweep':writer13.writerow,
        'rootkit':writer14.writerow,
        'satan':writer15.writerow,
        'smurf':writer16.writerow,
        'spy':writer17.writerow,
        'teardrop':writer18.writerow,
        'warezclient':writer19.writerow,
        'warezmaster':writer20.writerow,
    }
    for row in csv.reader(fin, delimiter=','):
        if row[41] in options.keys() :
            options[row[41]](row)

---

您的

open

s本质上是嵌套的，您有23个。在Python2.7中，可以使用（

contextlib2

）来包含多个上下文，从而避免嵌套

---

有关一些好的示例，请参见。

您的

打开的
本质上是嵌套的，您有23个。在Python2.7中，可以使用（
contextlib2
）来包含多个上下文，从而避免嵌套

请参阅以获取一些好的示例。
对不起。这仍然会产生相同的错误。这是否意味着我需要为csv.writer和选项使用字典？对不起。这仍然会产生相同的错误。这是否意味着我需要为csv.writer和选项使用字典？