使用 python 脚本将 JSON 嵌套到 CSV

Question

我是 python 新手，我有一个大型 json 文件需要转换为 csv - 下面是一个示例

{ "status": "success","Name": "Theresa May","Location": "87654321","AccountCategory": "Business","AccountType": "Current","TicketNo": " 12345-12","AvailableBal":"12775.0400","BookBa":"123475.0400","TotalCredit":"1234567","TotalDebit":"0","Usage":"5","Period":" 2014 年 5 月 11 日至 2014 年 7 月 11 日”，“货币”：“英镑”，“申请人”：“天使”，“签字人”：[{“姓名”：“不可用”，“BVB”：“不可用”}] ,"Details": [{"PTransactionDate":"24-Jul-14","PValueDate":"24-Jul-13","Pnarration":"Cash Deposit","PCredit":"0.0000","PDebit ":"40003.0000","PBalance":"40003.0000"},{"PTransactionDate":"24-Jul-14","PValueDate":"23-Jul-14","PTest":"现金存款"," PCredit":"0.0000","PDebit":"40003.0000","PBalance":"40003.0000"},{"PTransactionDate":"25-Jul-14","PValueDate":"22-Jul-14"," PTest":"Cash Deposit","PCredit":"0.0000","PDebit":"40003.0000","PBalance":"40003.0000"},{"PTransactionDate":"25-Jul-14","PValueDate": "21-Jul-14","PTest":"现金存款","PCredit":"0.0000","PDebit":"40003.0000","PBalance":"40003.0000" },{"PTransactionDate":"25-Jul-14","PValueDate":"20-Jul-14","PTest":"Cash Deposit","PCredit":"0.0000","PDebit":"40003.0000 ","PBalance":"40003.0000"}]}

我需要这个显示为

name、status、location、accountcategory、accounttype、availablebal、totalcredit、totaldebit 等作为列，

pcredit、pdebit、pbalance、ptransactiondate、pvaluedate 和 'ptest' 在 JSON 文件中显示的每一行都有新值

我已经设法将下面的脚本放在一起在线查找，但它最后向我显示了一个空的 csv 文件。我做错了什么？我使用了在线 json 到 csv 转换器并且它可以工作，但是由于这些是敏感文件，我希望用我自己的脚本编写/管理，所以我可以确切地看到它是如何工作的。请参阅下面的 python 脚本 - 我可以就更改内容提供一些建议吗？谢谢

import csv
import json


infile = open("BankStatementJSON1.json","r")
outfile = open("testing.csv","w")

writer = csv.writer(outfile)

for row in json.loads(infile.read()):
    writer.writerow(row)

    import csv, json, sys

    # if you are not using utf-8 files, remove the next line
    sys.setdefaultencoding("UTF-8")  # set the encode to utf8
    # check if you pass the input file and output file
    if sys.argv[1] is not None and sys.argv[2] is not None:
        fileInput = sys.argv[1]
        fileOutput = sys.argv[2]
        inputFile = open("BankStatementJSON1.json","r")  # open json file
        outputFile = open("testing2.csv","w")  # load csv file
        data = json.load("BankStatementJSON1.json")  # load json content
        inputFile.close()  # close the input file
        output = csv.writer("testing.csv")  # create a csv.write
        output.writerow(data[0].keys())  # header row
        for row in data:
            output.writerow(row.values())  # values row

Answer 1

这适用于您发布的 JSON 示例。问题是你嵌套了dict，你不能为pcredit, pdebit, pbalance, ptransactiondate, pvaluedate and ptest创建你想要的子标题和子行。

你可以使用csv.DictWriter:

import csv
import json

with open("BankStatementJSON1.json", "r") as inputFile:  # open json file
    data = json.loads(inputFile.read())  # load json content

with open("testing.csv", "w") as outputFile:  # open csv file
    output = csv.DictWriter(outputFile, data.keys())  # create a writer
    output.writeheader()
    output.writerow(data)

Answer 2

确保最后也关闭了输出文件。