Python批量修改文件夹内所有json文件中部分内容

#coding=utf-8

import os

import json

#获取目标文件夹的路径

filedir = os.getcwd()+'/ceshi'

#获取文件夹中的文件名称列表

filenames=os.listdir(filedir)

#遍历文件名

for filename in filenames:

    filepath = filedir+'/'+filename

    print filepath

    after = []

    # 打开文件取出数据并修改，然后存入变量

    with open(filepath, 'rb') as f:

        data = json.load(f)

        print type(data)

        for zidian in data:

            if zidian["conference_date"] == "":

                zidian["conference_date"] = "0001-01-01T00:00:00Z"

            if zidian["publication_date"] == "":

                zidian["publication_date"] = "0001-01-01T00:00:00Z"

        after = data

    # 打开文件并覆盖写入修改后内容

    with open(filepath, 'wb') as f:

        data = json.dump(after, f)