better python text editor

[snippsat]

is there a way to auto-backup the old py when the current py is saved?

As mention over TimeLine is build in into VS Code.
Look down in left corner,if click on files it will eg as here show first save and last save.

[kucingkembar]

@jefsummers
yes it contain save "history" but sometime i need old data

[jefsummers]

What do you mean by old data? Data to be fed into the program, or data that is generated by the program? If the latter, just run the prior version and it should generate the output data.