How to stop for loop in Python?

I think something goes wrong within my for loop. It's repeat a lot while I want it to post once and then stop. Can someone please check if I miss something in my code?

        for entry in incoming_message['entry']:
        for message in entry['messaging']:
            # Check to make sure the received call is a message call
            if 'message' in message:
                if 'attachments' in message['message']:
                    # Send attachment
                    print(message['message']['attachments'][0]['type'])
                    post_facebook_message(message['sender']['id'],
                                                 message['message']
                                                 ['attachments'][0]['type'])
                    continue
                else:
                    pprint(message)
                    # Assuming the sender only sends text.
                    post_facebook_message(message['sender']['id'],
                                      message['message']['text'])
                break
            elif 'postback' in message:
                post_facebook_message(message['sender']['id'],
                                      message['postback']['payload'])
            break
    return HttpResponse()