How to export all Python libraries at once?

Question

Python

In Python, some libraries are installed with great difficulty and problems.
Is there a proven way to export everything you need at once and put it on a clean system at once? Or maybe it's easier to somehow make a snapshot of the entire system and then upload it to a blank disk, is there such a possibility?
PS Additional question. Is it possible to update all libraries with one command?

Answer 1

In Python, some libraries are installed with great difficulty and problems.

Which for example? It's usually very easy to set up.
Is that a roaming virtual environment. But this is, firstly, a platform-dependent solution, and secondly, in general, it is not a good idea. Using requirements.txt is more correct.
No.