what is difference between python CGI and webapplication

[kchandel]

what is difference between python CGI and webapplication

[metulburr]

WSGI runs the Python interpreter on web server start, either as part of the web server process (embedded mode) or as a separate process (daemon mode), and loads the script into it. Each request results in a specific function in the script being called, with the request environment passed as arguments to the function.

CGI runs the script as a separate process each request and uses environment variables, stdin, and stdout to "communicate" with it.

And i believe web applications such as django are advanced wrappers around wsgi.

[wavic]

Django, Flask, bottle.py, Pyramid, Sanic are web frameworks running on WSGI which is running on some web server like Apache or Nginx.

You can use these frameworks to build a web application. Or you can use plain SGI. The frameworks just make it easier for you.