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

首先跟踪 pdb 如何处理命令历史，并将其与 REPL 历史的行为进行比较；该 issue 指向 bdb 和入口点 python -m pdb -c。确认预期的持久化范围，然后验证在一次调试运行中输入的命令可在之后的运行中使用，同时不会破坏方向键导航或现有的 -c 命令。