如何保存 Python 交互式会话? [英] How to save a Python interactive session?

问题描述

我发现自己经常使用 Python 的解释器来处理数据库、文件等——基本上是对半结构化数据进行大量手动格式化.我没有像我希望的那样经常正确地保存和清理有用的位.有没有办法将我的输入保存到 shell 中(数据库连接、变量赋值、很少的 for 循环和一些逻辑)——交互式会话的一些历史?如果我使用类似 script 的东西，我会得到太多的标准输出噪音.我真的不需要腌制所有对象——尽管如果有解决方案可以做到这一点，那就没问题了.理想情况下，我只会留下一个脚本，该脚本与我交互式创建的脚本一样运行，我可以删除不需要的位.是否有执行此操作的软件包或 DIY 方法?

I find myself frequently using Python's interpreter to work with databases, files, etc -- basically a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, little for loops and bits of logic) -- some history of the interactive session? If I use something like script I get too much stdout noise. I don't really need to pickle all the objects -- though if there is a solution that does that, it would be OK. Ideally I would just be left with a script that ran as the one I created interactively, and I could just delete the bits I didn't need. Is there a package that does this, or a DIY approach?

推荐答案

IPython 如果您喜欢使用交互式会议.例如，对于您的用例，有 %save 魔术命令，您只需输入 %save my_useful_session 10-20 23 即可将输入的第 10 到 20 和 23 行保存到 my_useful_session.py(以帮助解决这个问题，每一行都以其编号为前缀).

IPython is extremely useful if you like using interactive sessions. For example for your use-case there is the %save magic command, you just input %save my_useful_session 10-20 23 to save input lines 10 to 20 and 23 to my_useful_session.py (to help with this, every line is prefixed by its number).

此外，文档指出:

此函数使用与 %history<相同的语法/a> 用于输入范围，然后将行保存为您指定的文件名.

This function uses the same syntax as %history for input ranges, then saves the lines to the filename you specify.

例如，这允许引用较旧的会话，例如

This allows for example, to reference older sessions, such as

%save current_session ~0/
%save previous_session ~1/

查看演示页面上的视频，快速了解功能.

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