将数据嵌套到 csv python

Question

我有一个嵌套的 json 数据文件。我正在尝试“get.some_object”并用这些对象编写一个csv文件（我认为它们被称为对象：“some_object”：“some_value”）；我想为每组嵌套项设置一行。这是我的代码：

import csv
import json

path = 'E:/Uni Arbeit/Prof Hayo/Sascha/Bill data/97/bills/hr/hr4242'

outputfile = open('TaxLaw1981.csv', 'w', newline='')                            
outputwriter = csv.writer(outputfile)

with open(path + "/" + "/data.json", "r") as f:
    data = json.load(f)

    for act in data['actions']:
        a = act.get('acted_at')
        b = act.get('text')
        c = act.get('type')

        outputwriter.writerow([a, b, c])
outputfile.close()       

我的问题是它只将最后一组数据写入csv；但是当我跑步时

with open(path + "/" + "/data.json", "r") as f:
data = json.load(f)

for act in data['actions']:

    a = act.get('acted_at')
    b = act.get('text')
    c = act.get('type')
    print (a) 

我所有的“a”值都会打印出来。

建议？

Answer 1

您需要刷新 outputwriter 以将行写入文件，否则它将继续替换变量中的行并最终只写入最后一个值。除非您刷新数据，否则 Writerow 仅在您关闭文件时才有效。

for act in data['actions']:
        a = act.get('acted_at')
        b = act.get('text')
        c = act.get('type')
        outputwriter.writerow([a, b, c])
        outputfile.flush()

Answer 2

您在上面发布的代码 100% 适用于您拥有的文件。

该文件（任何感兴趣的人）都可以通过rsync -avz --delete --delete-excluded --exclude **/text-versions/ govtrack.us::govtrackdata/congress/97/bills/hr/hr4242 . 获得。

而csv文件的输出是（中间省略几行）

1981-07-23,Referred to House Committee on Ways and Means.,referral
1981-07-23,"Consideration and Mark-up Session Held by Committee on Ways and Means Prior to Introduction (Jun 10, 81 through Jul 23, 81).",action
1981-07-23,"Hearings Held by House Committee on Ways and Means Prior to Introduction (Feb 24, 25, Mar 3, 4, 5, 24, 25, 26, 27, 30, 31, Apr 1, 2, 3, 7, 81).",action
...
...
...
1981-08-12,Measure Signed in Senate.,action
1981-08-12,Presented to President.,topresident
1981-08-13,Signed by President.,signed
1981-08-13,Became Public Law No: 97-34.,enacted

您应该发布执行时收到的完整错误代码（可能是由于编码错误），以让他人了解您的代码失败的原因。