def delete(self, request):# pylint: disable=no-self-use
     """the method must accept the name of the file (string) of the image which is already
      used as a profile photo or icon
      """
     key = request.body.decode()
     if not AwsService.check_if_in_bucket(key):
         if AwsService.del_photo(key):
             return RESPONSE_200_SUCCESS
         return RESPONSE_500_NO_SUCCESS
     return RESPONSE_404_NOT_FOUND
 def put(self, request):# pylint: disable=no-self-use
     """The method must accept the name of the file (string) of the image which is already used
     as a profile photo, and the new image which is passed in a form.
     The name property of the file which is passed is 'icon', the name of the file to be replaced
     is 'old', so in HTML form it must be set: <input type='file' name = 'icon'>
     """
     request.method = 'POST'
     req_dict = request.POST
     old_file = req_dict['old']
     new_file = request.FILES['icon']
     if AwsService.upload(new_file):
         if AwsService.del_photo(old_file):
             if not AwsService.check_if_in_bucket(new_file):
                 return RESPONSE_200_SUCCESS
         return RESPONSE_404_NOT_FOUND
     return RESPONSE_500_NO_SUCCESS