使用python递归遍历json的key,并将key的大写转化为小写

直接上代码吧

def lower_json(json_info):

    if isinstance(json_info,dict):
        for key in list(json_info.keys()):
            if key.islower():
                lower_json(json_info[key])
            else:
                key_lower = key.lower()
                json_info[key_lower] = json_info[key]
                del json_info[key]
                lower_json(json_info[key_lower])

    elif isinstance(json_info,list):
        for item in json_info:
            lower_json(item)

测试如下

if __name__ == '__main__':
	test = {
	  "mappings": {
	    "MY_type": {
	      "Properties": '123'
	        }
	    }
	  }
	json_info = json.loads(json_txt)
    lower_json(json_info) 
    print(json_info)

结果

{"mappings": {"my_type": {"properties": "123"}}}

可以看到递归遍历的过程中把所有的key全部转化为小写了