[大数据]python处理json字符串之剔除某些label值

import os
import json

for file in os.listdir("./"):
    if file.endswith(".json"):
        with open(file,'rb') as load_f:
            load_dict = json.load(load_f)
            temp = load_dict['shapes']
            for i in reversed(range(len(temp))):
                a = temp[i]['label']
                if (a == 'label_2' or a=='label_1' or a== 'label_3'):
                    #print(temp[i])
                    del temp[i]
        #load_f.write(load_dict)
        #load_f.close()
        #load_dict = json.dumps(load_dict, indent=2)
        with open(file,'w') as load_f:
            json.dump(load_dict, load_f, indent=4)
            #file.write(load_dict)