Say I'm writing a small GPLv3 licensed Python script that I want to release publicly. It would use a few MIT licensed libraries and maybe also some chunks of code from some MIT licensed projects.

As per the MIT license conditions I would have to include the MIT license text in my project. So how would that be done properly? And how about other licenses that require the license text to be included?

Sorry if this has already been answered a million times. I'm relatively new to this stuff and I find the licenses really hard to understand despite my attempts. I tried to also use some other open source projects as examples, but most of them don't seem to include the license texts anywhere but the readme files at least seem to state which libraries they use.