Python recommendation returns an error when you exit ipython

[StarkillerX42]

I followed the recommendation for removing .python_history, and when I exit ipython, I get the following error message, and then ipython exits.

Exception ignored in atexit callback: <function write_history at 0x7ff4c0737420>
Traceback (most recent call last):
  File "/etc/python/pythonrc", line 27, in write_history
    readline.write_history_file(history)
    ^^^^^^^^
NameError: name 'readline' is not defined

This seems like a weird result, given that the python file should be valid and readline should never be undefined, unless it's reading that file differently than normal python.

Python 3.11
IPython 8.14.0

[iuuky]

Write the following into $XDG_CONFIG_HOME/python/pythonrc:

#!/usr/bin/env python3

def is_vanilla() -> bool:
	""" :return: whether running "vanilla" Python """
	import sys
	return not hasattr(__builtins__, '__IPYTHON__') and 'bpython' not in sys.argv[0]


def setup_history():
	""" read and write history from state file """
	import os
	import atexit
	import readline
	from pathlib import Path

	# https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
	if state_home := os.environ.get('XDG_STATE_HOME'):
		state_home = Path(state_home)
	else:
		state_home = Path.home() / '.local' / 'state'

	history: Path = state_home / 'python_history'

	readline.read_history_file(str(history))
	atexit.register(readline.write_history_file, str(history))


if is_vanilla():
	setup_history()

Then create an empty file for the history, in my case, it's in $XDG_STATE_HOME/python_history.

[TiZ-HugLife]

Er, hi, hello. I'm using xdg-ninja to clean up my home directory, and this issue was linked from it, so I thought I would come here. The suggestion for dealing with python is... actually way worse than the status quo? The solution to dealing with a hidden-by-default dotfile is to create a non-hidden directory? I don't have a python directory in $HOME, so why would I want to do that?

[lucaspar]

@HugLifeTiZ I think the suggestion is just wrong, perhaps an oversight. It should have been $XDG_CONFIG_HOME instead:

export PYTHONSTARTUP="$HOME"/python/pythonrc

to become

export PYTHONSTARTUP="$XDG_CONFIG_HOME"/python/pythonrc