如何使用request.post(Python)直接发送数组类型的方式

我们先来看一下request的源码

 """Constructs a :class:`Request <Request>`, prepares it and sends it.
        Returns :class:`Response <Response>` object.

        :param method: method for the new :class:`Request` object.
        :param url: URL for the new :class:`Request` object.
        :param params: (optional) Dictionary or bytes to be sent in the query
            string for the :class:`Request`.
        :param data: (optional) Dictionary, list of tuples, bytes, or file-like
            object to send in the body of the :class:`Request`.
        :param json: (optional) json to send in the body of the
            :class:`Request`.
        :param headers: (optional) Dictionary of HTTP Headers to send with the
            :class:`Request`.

可看到入参数有data、json，若还有其他的参数使用可变参数字典形式进行传递了kwargs
data类型传参有字典、列表元祖等类型，json传参就是将参数转化为json格式进行传递的。
传递numpy时，我们一般将数组转为bytes然后传递给data参数。
我们这里举例：
发送数据为

keypoints = result['preds']
dic={}
dic['index']=keypoints.tolist()
dicJson = json.dumps(dic)
headers = {'Content-Type': 'application/json'}
url = 'http://10.11.24.23:8384/getimg'
# response = requests.post(url= url, headers=headers,  data=img_encoded.tobytes())
response = requests.post(url= url, headers=headers,  json=dicJson)

获取数据

pose_results = request.json #获取到json
pose_results = json.loads(pose_results)#list数据
#np.array(pose_results['index']).shape转为numpy