Btukfyl

I am using Microsoft cognitive services for face and emotion Recognition using API.
Now when i run my code camera started capturing and sending image for processing and when face found in the image it gives output as an array and if no face is found in the image, the code gives the error and it will stop code execution how to handle this error in code.i want when no face found in image it bypass the image and go for another image

code:

while(True):



    ret,img=cam.read()

    faces=faceDetect.detectMultiScale(img,1.3,5)



    for(x,y,w,h) in faces:

        sampleNumber=sampleNumber+1

        cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),3)

        cv2.waitKey(10)



    success, img_data = cv2.imencode('.jpg', img)

    img_data = img_data.tobytes()





    result = a[0]['faceId']

    r = requests.post(api_url,

                  params=params,

                  headers=header,

                  data=img_data)

try:

    conn =httplib.HTTPSConnection('centralindia.api.cognitive.microsoft.com')

    conn.request("POST", "/face/v1.0/identify?%s" % params1, str(body), header1)

    response = conn.getresponse()

    data = response.read()

    responseObject = json.loads(data)

    print(data)

    print(responseObject)

    x = responseObject[0]['candidates'][0]['personId']

    #x is the personId

    print (x)

    print [str(x)]

    if x=="3a2861ff-5b0c-4056-9c6c-f917e0523342":

        name="AKASH DIXIT"

        print("AKASH DIXIT")

        cv2.putText(img, name, (10, 120), font, 1, (0, 0, 255), 2, cv2.LINE_AA)

        cv2.putText(img, c, (10, 180), font, 1, (0, 0, 255), 2, cv2.LINE_AA)

        cv2.imshow("Face", img)

 conn.close()

 except Exception as e:

    print(e)



IndexError: list index out of range

Here is the image of the error