JSON中位置1处出现意外标记D错误

Question

我正在从node.js调用一个python脚本作为子进程，python脚本从我上传到我的应用程序的文件中提取数据，当我通过应用程序上传文件时，我得到以下错误“UnhandledPromisejectionWarning:SyntaxError:JSON中的意外标记D位于位置1，但当我在python脚本中声明的数据样本上测试python脚本时，它工作得很好，我该如何解决这个问题

以下是我使用的代码：

import sys
import re
import json
from pathlib import Path
from collections import defaultdict


file_path = (Path(__file__).parent / "../config/kal_ejournal.json").absolute()
print(file_path)
with open(file_path) as jsonFile:
    jsonObject = json.load(jsonFile)


rCARD_NUMBER = jsonObject['Dictionary']['rCARD_NUMBER']['regex']

bCARD_NUMBER = jsonObject['Field_extraction_rules']['bCARD_NUMBER']

regex = rCARD_NUMBER*bCARD_NUMBER 
# re.DOTALL to match any characters including newline
input = open(sys.argv[1], "r")
# print(input.read())
matches = re.findall(regex, input.read(), re.DOTALL)
print(json.dumps(matches))

下面是Node.js中的代码

 const python = spawn("python", [
      "./data/DataExtractor_2.py",
      req.file.path,
    ]);

    // collect data from script
    python.stdout.on("data", function (data) {
      console.log("Pipe data from python script ...");
      largeDataSet.push(data);
    });

    // in close event we are sure that stream is from child process is closed
    python.on("close", async (code) => {
      console.log(`child process close all stdio with code ${code}`);
        const pythonRes = largeDataSet.join("");
      var json = JSON.parse("[" + pythonRes + "]");
      var json = [].concat.apply([], json);
      const tocsv = ConvertToCSV(json);
      let tojson = await csv().fromString(tocsv); // convert csv to json
}