The New REPL Does Not Load My Command History

Bug report

Bug description:

In my ~/.pystartup I have the following code:

import atexit
import os
import readline
import rlcompleter

historyPath = os.path.expanduser("~/.pyhistory")

def save_history(historyPath=historyPath):
    import readline
    readline.write_history_file(historyPath)

if os.path.exists(historyPath):
    readline.read_history_file(historyPath)

atexit.register(save_history)
del os, atexit, readline, rlcompleter, save_history, historyPath

This is something I've been using for years. With this startup file, I can enter the REPL and immediately up-arrow to scroll through the commands I used the last time I used the REPL.

With the new REPL there are two related things going wrong:

• my command history is not loaded (when I immediately up-arrow, it does nothing)
• my command history is not saved in my .pyhistory file (the file is touched but not otherwise modified)

CC @ambv, @pablogsal

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux