Python opening and editing .txt files

Question

Can you do this on Sololearn code playground?
I assume not, but I saw a comment on one of the lessons mentioning it, so I am curious.

Answer 1

Hmm. I now think your question is about interactivity and persistence, when previously I read this as "reading in a text file, editing it programmatically, displaying changes".
As far as I know, you can only programmatically edit files you yourself create each time your program runs. <-- (better?)
My original point was that if I/others can learn about text file I/O performance and have that pass for learning, normal "read/write/edit" to learn about file I/O seems comparatively safe.

Answer 2

I tried testing language boundary conditions of .txt files here:
https://code.sololearn.com/cV414bDIoEE6/?ref=app
...and in other langs I create (or suggest creating) files so people can experiment with file I/O (mostly c++)
There's no persistence (you always have to recreate your files) but perhaps that's a way of saying go ahead and use the language, they'll clean up when you're done?

Answer 3

Uh, what? Im just asking if you can do r and e in code playground and i figured out you can, but now im really curious so what is that??