Add pythonrc for xdg history file

home/.config/pythonrc.py

@@ -0,0 +1,28 @@
+import atexit
+import os
+import readline
+from functools import partial
+from pathlib import Path
+from types import ModuleType
+
+cache_xdg_dir = Path(
+    os.environ.get("XDG_CACHE_HOME", str(Path("~/.cache").expanduser()))
+)
+cache_xdg_dir.mkdir(exist_ok=True, parents=True)
+
+history_file = cache_xdg_dir.joinpath("python_history")
+history_file.touch()
+
+readline.read_history_file(history_file)
+
+
+def write_history(readline: ModuleType, history_file: Path) -> None:
+    """
+    We need to get ``readline`` and ``history_file`` as arguments, as it
+    seems they get garbage collected when the function is registered and
+    the program ends, even though we refer to them here.
+    """
+    readline.write_history_file(history_file)
+
+
+atexit.register(partial(write_history, readline, history_file))