python修改json文件value值_python批量修改json文件
import json
import os
path = 'G:\Desktop\要修改文件的目录'
dirs = os.listdir(path)
num_flag = 0
for file in dirs: # 循环读取路径下的文件并筛选输出
if os.path.splitext(file)[1] == ".json": # 筛选csv文件
num_flag = num_flag +1
print(file , end=' ')
# print(os.path.join(path,file))
with open(os.path.join(path,file),'r') as load_f:
load_dict = json.load(load_f)
load_dict['shapes'][0]['label'] = 'lian_mu_dan_gao1'
print(load_dict['shapes'][0]['label'])
with open(os.path.join(path,file),'w') as dump_f:
json.dump(load_dict, dump_f)
if(num_flag == 0):
print('所选文件夹不存在json文件，请重新确认要选择的文件夹')
else:
print('共{}个json文件'.format(num_flag))