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I just upgraded to Python 3.13 and found that the vim key bindings that I had set up via readline and ~/.editrc, which worked in previous releases of the Python REPL, no longer work. Is there some way to get vim (or emacs) key bindings to work in the new REPL?

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It looks like I have already found the answer, in PEP 762 – REPL-acing the default REPL. The answer is no.

It explains in the Rationale section that the designers of the new REPL made a trade-off: to sacrifice configurability in order to gain features newly implemented from scratch, such as multi-line editing. For example, you can now hit up-arrow and edit a whole multi-line Python statement instead of hitting up-arrow to get just one line of a previously entered statement. This would be too hard to interface with readline and editline, which are relatively complex and call for features that are not implemented in PyREPL.

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The new REPL does not seem to support vim bindings. To use the old REPL set the env var PYTHON_BASIC_REPL=1

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