Save `pdb` Line History Between Runs

Feature or enhancement

Proposal:

When using pdb, it is possible to use the arrow keys (up/down) to navigate through previous commands. However, commands between runs are not preserved (unlike in the REPL).

I would like commands to be preserved between runs. For me, the most common use case for this is setting a breakpoint in the same place. Currently, I do this with python -m pdb -c "break file.py:line" ....

I am not familiar with how the pdb is implemented, but I have used bdb in depth in the past. I assume that it is possible to do this in a similar way to the REPL history. There is a workaround available here: https://stackoverflow.com/a/35390866/.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

まず、pdb がコマンド履歴をどのように扱うかを追跡し、REPL の履歴の挙動と比較します。この issue は bdb とエントリーポイント python -m pdb -c を指しています。想定される永続化の範囲を確認したうえで、あるデバッグ実行で入力したコマンドが後の実行でも利用でき、矢印キーによるナビゲーションや既存の -c コマンドを壊さないことを検証します。