Python读写json文件

import json    

    print(datetime.datetime.now())
    LogSeq = 0
    fileName = os.path.join("",f'Config.json')
    if not os.path.exists(fileName):
         # 创建一个字典对象
        data = {
            "Sponge": {
                 "LogSeq":"0"
            }
        }
        json_data = json.dumps(data)
        with open(fileName, 'w') as file:
            file.write(json_data)
    else:
 
        with open(fileName, 'r') as file: 
            data = json.load(file) 
        print(data)
        LogSeq = int(data['Sponge']['LogSeq'])+1
        if(int(LogSeq) > 60):
             LogSeq = 0

        data['Sponge']['LogSeq'] = LogSeq # int(LogSeq)+1

        update_json = json.dumps(data)
        #print(LogSeq)
        with open(fileName, 'w') as file:
            file.write(update_json)
    print(LogSeq)
    print(datetime.datetime.now())