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45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
#!/usr/bin/env python3
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# This entire thing is unnecessary post v3.13.0a3
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# https://github.com/python/cpython/issues/73965
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import os
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import sys
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import atexit
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import readline
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from pathlib import Path
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def is_vanilla() -> bool:
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"""Check whether this is a vanilla Python interpreter below 3.13."""
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return (
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not hasattr(__builtins__, "__IPYTHON__")
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and "bpython" not in sys.argv[0]
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and sys.version_info < (3, 13)
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)
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def setup_history() -> None:
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"""Read and write history from state file."""
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# Check PYTHON_HISTORY for future-compatibility with Python 3.13
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if history := os.environ.get("PYTHON_HISTORY"):
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history = Path(history)
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# https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
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elif state_home := os.environ.get("XDG_STATE_HOME"):
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state_home = Path(state_home)
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else:
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state_home = Path.home() / ".local" / "state"
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history: Path = history or state_home / "python_history"
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# https://github.com/python/cpython/issues/105694
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if not history.is_file():
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# breaks on macos + python3 without this.
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readline.write_history_file(str(history))
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readline.read_history_file(history)
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atexit.register(readline.write_history_file, history)
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if is_vanilla():
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setup_history()
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