The two REPLs are not the same, unless editor-integrated Python REPLs have gone through a revolution since I last checked. See https://lambdaisland.com/blog/29-12-2017-the-bare-minimum-cl... and circa 22:49.90 of [Stop Writing Dead Programs][1], on the topic of interacting with a live system as you write it.

[1]: https://jackrusher.com/strange-loop-2022/