Python cgi server module not found

When I run python -m SimpleHTTPServer 8000 or python -m CGIHTTPServer 8000 in cmd, I get this error :

No module named SimpleHTTPServer

or

No module named CGIHTTPServer

Does anyone know why this happens or another way to test python cgi-scripts?

Answer

That's not how you start those from the command line.

See the docs: the basic HTTP server is started with

python -m http.server 8000

and the CGI server with

python -m http.server --cgi 8000