updateArtcile.py

import json
import os
from os.path import exists

def loopJsonFiles():
  directory = os.fsencode('data')
      
  for file in os.listdir(directory):
      filename = os.fsdecode(file)   
      if filename.endswith(".json"): 
        updateJsonFile(filename)


def updateJsonFile(file):

  path = "data/"+file
  newPath = "complete/"+file
  file_exists = exists(newPath)

  if file_exists:
    return

  newData = []
  with open(path) as json_file:
    data = json.load(json_file)
    for v in data:
      id = v[0]
      newId = id + '-ART45'
      v[0] = newId
      newData.append(v)

  with open(newPath, 'w') as outfile:
      outfile.write(json.dumps(newData))

if __name__ == '__main__':
  loopJsonFiles()