Upload Image using POST form data in Python-requests

Question

I'm working with wechat APIs ... here I've to upload an image to wechat's server using this API http://admin.wechat.com/wiki/index.php?title=Transferring_Multimedia_Files

url = 'http://file.api.wechat.com/cgi-bin/media/upload?access_token=%s&type=image'%access_token files = {     'file': (filename, open(filepath, 'rb')),     'Content-Type': 'image/jpeg',     'Content-Length': l } r = requests.post(url, files=files) 

I'm not able to post data

Answer 1

From wechat api doc:

curl -F [email protected] "http://file.api.wechat.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE" 

Translate the command above to python:

import requests url = 'http://file.api.wechat.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE' files = {'media': open('test.jpg', 'rb')} requests.post(url, files=files) 

Doc: https://docs.python-requests.org/en/master/user/quickstart/#post-a-multipart-encoded-file

Answer 2

In case if you were to pass the image as part of JSON along with other attributes, you can use the below snippet.
client.py

import base64 import json                      import requests  api = 'http://localhost:8080/test' image_file = 'sample_image.png'  with open(image_file, "rb") as f:     im_bytes = f.read()         im_b64 = base64.b64encode(im_bytes).decode("utf8")  headers = {'Content-type': 'application/json', 'Accept': 'text/plain'}    payload = json.dumps({"image": im_b64, "other_key": "value"}) response = requests.post(api, data=payload, headers=headers) try:     data = response.json()          print(data)                 except requests.exceptions.RequestException:     print(response.text) 

server.py

import io import json                     import base64                   import logging              import numpy as np from PIL import Image  from flask import Flask, request, jsonify, abort  app = Flask(__name__)           app.logger.setLevel(logging.DEBUG)       @app.route("/test", methods=['POST']) def test_method():              # print(request.json)           if not request.json or 'image' not in request.json:          abort(400)                   # get the base64 encoded string     im_b64 = request.json['image']      # convert it into bytes       img_bytes = base64.b64decode(im_b64.encode('utf-8'))      # convert bytes data to PIL Image object     img = Image.open(io.BytesIO(img_bytes))      # PIL image object to numpy array     img_arr = np.asarray(img)           print('img shape', img_arr.shape)      # process your img_arr here              # access other keys of json     # print(request.json['other_key'])      result_dict = {'output': 'output_key'}     return result_dict       def run_server_api():     app.run(host='0.0.0.0', port=8080)       if __name__ == "__main__":          run_server_api()