Question

将csv转换为json格式并使用itertool.group按特定数据分组之后。我试图在中间插入一个新对象，以将现有数据传递给新对象。

CSV文件：

date,ref_num,description,debit,credit,coa_code,coa_name
2018-12-28,PV18/12/060,magicc,,916.60,310-1000,fineTaste
2018-12-28,PV18/12/060,youngClothes,916.60,,405-F005,magicc

代码

import csv
import json
from itertools import groupby

with open("ledgers.csv", "r") as csv_ledger:
    r = csv.DictReader(csv_ledger)

    data = [dict(d) for d in r]
    groups = []

    for k, g in groupby(data, lambda r: (r['ref_num'], r['date'])):
        groups.append({
            "date": k[1],
            "ref_num": k[0],
            "items": [{k: v for k, v in d.items() if k not in ['ref_num', 
                     'date']} for d in list(g)]
        })

print(json.dumps(groups, indent = 4))

结果

[
    {
        "date": "2018-12-28",
        "ref_num": "PV18/12/060",
        "items": [
            {
                "description": "magicc",
                "debit": "",
                "credit": "916.60",
                "coa_code": "310-1000",
                "coa_name": "fineTaste"
            },
            {
                "description": "youngClothes",
                "debit": "916.60",
                "credit": "",
                "coa_code": "405-F005",
                "coa_name": "magicc"
            }
        ]
    }
]

这是当前结果，我需要在信用额下方插入info，该对象将包含coa_code和coa_name。因此，我确实尝试在“项目”中添加信息，但是它不起作用。

新代码

with open("ledgers.csv", "r") as csv_ledger:
    r = csv.DictReader(csv_ledger)

    data = [dict(d) for d in r]
    groups = []

    for k, g in groupby(data, lambda r: (r['ref_num'], r['date'])):
        groups.append({
            "date": k[1],
            "ref_num": k[0],
            "items": [{k: v, 'info': {'coa_code': v}} for k, v in 
           d.items() if k not in ['ref_num', 'date'] for d in list(g)]
        })

预期结果

[
    {
        "date": "2018-12-28",
        "ref_num": "PV18/12/060",
        "items": [
            {
                "description": "magicc",
                "debit": "",
                "credit": "916.60",
                "info": {
                         "coa_code": "310-1000",
                         "coa_name": "fineTaste"
              }
            },
            {
                "description": "youngClothes",
                "debit": "916.60",
                "credit": "",
                "info": {
                         "coa_code": "405-F005",
                         "coa_name": "magicc"
              }
            }
        ]
    }
]

Answer 1

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首先，我建立了import csv import json from itertools import groupby with open("test.csv", "r") as csv_ledger: r = csv.DictReader(csv_ledger) data = [dict(d) for d in r] groups = [] for k, g in groupby(data, lambda r: (r['ref_num'], r['date'])): items = [] for i in g: info = {k: v for k, v in i.items() if k in ['coa_code','coa_name']} item = {k: v for k, v in i.items() if k not in ['ref_num', 'date', 'coa_code', 'coa_name']} item.update({'info':info}) items.append(item) groups.append({ "date": k[1], "ref_num": k[0], "items": items }) print(json.dumps(groups, indent = 4))，因为以后从info中提取要困难得多，然后我制作了items，这是item中的每个词典，其中都包含一个{{1} }。然后，我在每个“项目”后面附加“项目”，以形成组内的项目列表。组建立后，我可以在items列表中附加所有信息。 PS：我之所以给我的.csv info打电话是因为我躺在那里，请小心更改名称。干杯！

将额外的对象插入json

1 个答案: