I would like to launch multiple selenium sessions and only one of them make visible. An user can interact with this webdriver window, and I want to retranslate all his actions on other sessions.
How can I do that on python?
No.
Selenium can control only those sessions, which have been initialized by its own.
You cannot retranslate test actions for more that 1 session.
The only similar thing you can do is to create few (as much as you need) tests, which will contain the same copy-pasted steps inside itself and run each of them in a separate window.
Can I copy actions from selenium session to other sessions?