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Comment by d33 | Hacker News Reader

Absolutely awesome! Add tab completion and maybe syntax highlighting and it sounds pretty powerful...

One thing I'm missing in interactive interpreters is a way to save code to a file on the fly - testing things and preparing the output file in one go. Does anybody know a solution to this for, say, Python?

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Do you mean like Jupyter notebooks?

http://jupyter.org/

Having something like this for command line would be nice.

Jupyter runs on the command line. It started out as a fancy Python REPL replacement (IPython), the notebook part has been a relatively new development.

I'm a big fan of bpython[1] for this. F10 copies current session to clipboard, F7 opens it in an external editor, and Ctrl-s saves it to a file.

[1]: https://github.com/bpython/bpython

https://root.cern.ch/ has tab completion and syntax highlighting. Also scripting support and built in reflection. It integrates with Python and R too, and you can move objects between the languages.

Use edit -p in ipython (the p is optional)

It opens your system editor and then runs the code on save. (-p opens the last edited thing from within the current ipython session)

How about the %save magic for ipython?

For example "%save mycode.py 1-10" saves the code input on lines 1 through 10 of the session to the file "mycode.py".

This has been one of the prominent use case of IPython from the start (now refactored into a language agnostic web based backend: Jupyter).

Just run it inside Emacs and you'll have a log of everything you do. In fact you could overlay C++ mode on top of shell mode and have syntax highlighting and everything.

Not for Python, but for a lua-like language: terralang.org

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