code: def get_captcha_key(self, captcha_image_url):
          
  
          if self.interactive:
              print('Open CAPTCHA image url in your browser and enter it below: ',
                    captcha_image_url)
              captcha_key = raw_input('Enter CAPTCHA key: ')
              return captcha_key
          else:
              raise VkAuthError(
                  'Captcha is required. Use interactive mode to enter it '
                  'manually')
docs: Read CAPTCHA key from user input