Python CSV 到 JSON 数组对象，具有来自 CSV 的唯一值作为一个 JSON 对象，其中多个答案

【问题标题】：Python CSV to JSON Array Objects with unique values from CSV as one JSON Object where more than onePython CSV 到 JSON 数组对象，具有来自 CSV 的唯一值作为一个 JSON 对象，其中多个
【发布时间】：2017-01-09 13:19:06
【问题描述】：

有这个 CSV：

Domain,IP,Server,PoweredBy,MetaGenerator,Email
http://www.example1.com,1.1.1.1,,,,
http://www.example2.com,2.2.2.2,Apache,PHP/5.5.9-1ubuntu4.20,,
http://www.example3.com,3.3.3.3,Apache,PHP/5.5.9-1ubuntu4.20,Easy Digital Downloads v2.4.9;Powered by Visual Composer - drag and drop page builder for WordPress.,info@example3.com;sales@example3.com

尝试构建一个 JSON 对象数组，其中每个对象都是 CSV 值的唯一组合，其中有很多（由“;”分隔），即

如我们所见，我们有不同的元生成器和用于 www.example3.com 的电子邮件

对于这种情况，对象的 JSON 数组应如下所示，每个组合都作为数组中的一个 JSON 对象：

[{'Domain': 'http://www.example1.com',
  'Email': '',
  'IP': '1.1.1.1',
  'MetaGenerator': '',
  'PoweredBy': '',
  'Server': ''},
 {'Domain': 'http://www.example2.com',
  'Email': '',
  'IP': '2.2.2.2',
  'MetaGenerator': '',
  'PoweredBy': 'PHP/5.5.9-1ubuntu4.20',
  'Server': 'Apache'},
 {'Domain': 'http://www.example3.com',
  'Email': 'sales@example3.com',
  'IP': '2.2.2.2',
  'MetaGenerator': 'Easy Digital Downloads v2.4.9',
  'PoweredBy': 'PHP/5.5.9-1ubuntu4.20',
  'Server': 'Apache'},
 {'Domain': 'http://www.example3.com',
  'Email': 'sales@example3.com',
  'IP': '2.2.2.2',
  'MetaGenerator': 'Powered by Visual Composer - drag and drop page builder for WordPress.',
  'PoweredBy': 'PHP/5.5.9-1ubuntu4.20',
  'Server': 'Apache'},
 {'Domain': 'http://www.example3.com',
  'Email': 'info@example3.com',
  'IP': '2.2.2.2',
  'MetaGenerator': 'Easy Digital Downloads v2.4.9',
  'PoweredBy': 'PHP/5.5.9-1ubuntu4.20',
  'Server': 'Apache'},
 {'Domain': 'http://www.example3.com',
  'Email': 'info@example3.com',
  'IP': '2.2.2.2',
  'MetaGenerator': 'Powered by Visual Composer - drag and drop page builder for WordPress.',
  'PoweredBy': 'PHP/5.5.9-1ubuntu4.20',
  'Server': 'Apache'}]

有这个 Python 代码：

import csv
import pprint
import json

with open("results.csv", 'r') as csvfile:
    reader = csv.DictReader(csvfile, delimiter=',')
    out=[]
    d=dict()
    for row in reader:
        if ';' in row['Email']:
          val = row['Email'].split(';')
          for v in val:
            d['Email']=v
            out.append(d)    
        if ';' in row['MetaGenerator']:
          val = row['MetaGenerator'].split(';')
          for v in val:
            d['MetaGenerator']=v
            out.append(d)
        else:
          d=row
          out.append(d) 


pprint.pprint(out)

但它不能正常工作。

如何实现我的目标？伪代码也可以。顺序并不重要。我应该使用哪些模块？

谢谢，

【问题讨论】：

标签： python json csv

【解决方案1】：

试试这个（检查itertools doc）：

import csv
import pprint
import json
import itertools

out=[]
with open("results.csv", 'r') as csvfile:
    reader = csv.DictReader(csvfile, delimiter=',')
    for row in reader:

        Domains = row['Domain'].split(";")
        Ips = row['IP'].split(";")
        Servers = row['Server'].split(";")
        Emails = row['Email'].split(";")
        MetaGenerators = row['MetaGenerator'].split(";")
        PoweredBy = row['PoweredBy'].split(";")

        for comb in itertools.product(Domains, Ips, Servers, Emails, MetaGenerators, PoweredBy):
            (cDomain, cIp, cServer, cEmail, cMeta, cPowered) = comb

            out.append({
                    'Domain': cDomain,
                    'IP': cIp,
                    'Server': cServer,
                    'Email': cEmail,
                    'MeraGenerator': cMeta,
                    'PoweredBy': cPowered
                })

pprint.pprint(out)

检查这个可读性较差但更智能的解决方案，与 csv 字段隔离：

out=[]
with open("results.csv", 'r') as csvfile:
    reader = csv.DictReader(csvfile, delimiter=',')
    headers = reader.fieldnames

    for row in reader:
        fields = [value.split(";") for key, value in row.iteritems()]
        out += [{headers[key]: value for key, value in enumerate(comb)} for comb in itertools.product(*fields)]

pprint.pprint(out)

【讨论】：