Please use the wiki guides, they explain everything. If you have a specific problem, post on the forums. "generator.py being missing" is not a problem because generator.py is irrelevant to compiling. And yes, it's deleted now. So you don't need to run it. References to it in the wiki guide have been removed.

https://powdertoy.co.uk/Wiki/W/Compiling_tpt%2B%2B_with_Visual_studio.html

https://powdertoy.co.uk/Wiki/W/Irc_setup.html

If you have a specific error message while compiling, please post it. If it's long, use https://bpaste.net