fix codestyle

python/examples/ocr/ocr_web_client.py

@@ -20,11 +20,13 @@ import base64
 import os, sys
 import time
 
+
 def cv2_to_base64(image):
     #data = cv2.imencode('.jpg', image)[1]
     return base64.b64encode(image).decode(
         'utf8')  #data.tostring()).decode('utf8')
 
+
 headers = {"Content-type": "application/json"}
 url = "http://127.0.0.1:9292/ocr/prediction"
 test_img_dir = "imgs/"