WSGI (Web Server Gateway Interface) is a Python standard for web application servers. It is a specification for how a web server communicates with web applications, and how web applications can be chained together to process one request.
An example of a WSGI application is a web application written in the Python programming language. It is written using the WSGI standard, which defines how the application should communicate with the web server. The web server then passes the request to the application, which processes it and returns a response.