CherryPy provides mechanisms to handle errors and exceptions that occur during the processing of HTTP requests. It offers various tools and configurations to manage and customize error handling within applications.

Handling Errors and Exceptions in CherryPy :


* Global Error Handling : CherryPy allows developers to define a global error handling method that can catch and handle uncaught exceptions across the entire application. This method is called whenever an unhandled exception occurs.

import cherrypy

class ErrorHandler:
    @cherrypy.expose
    def handle_error(self):
        # Custom error handling logic
        pass

cherrypy.config.update({'error_page.default': '/handle_error'})​

* Specific Error Pages : Developers can define specific error pages for different HTTP status codes or exceptions, providing custom error messages or redirects.

import cherrypy

class MyErrorPage:
    @cherrypy.expose
    def not_found(self):
        # Custom handling for 404 Not Found error
        pass

cherrypy.config.update({'error_page.404': '/not_found'})​

* Built-in Tools and Decorators : CherryPy provides built-in error handling tools and decorators that can be used to handle specific error conditions or HTTP status codes for individual endpoints.

import cherrypy

class MyResource:
    @cherrypy.expose
    @cherrypy.tools.response_headers(headers=[('Content-Type', 'text/plain')])
    def custom_error(self):
        raise cherrypy.HTTPError(status=500, message="Custom Error")​

* Logging and Debugging :  CherryPy includes logging facilities that allow developers to log error messages, tracebacks, and other relevant information to assist in debugging and troubleshooting errors.

* Custom Error Handling Logic : Developers can implement custom logic within their application to handle specific types of exceptions, validate input, or perform error recovery tasks.