What is the primary purpose of raising an `httperror(http_error_msg, response=self)` in Python?

Raising an `httperror` is typically done within a web framework or API to signal that an HTTP request has failed or encountered an error condition. The `http_error_msg` provides a human-readable description of the error, and `response=self` often indicates that the error is associated with the current response object being processed, allowing for richer error handling and reporting.