How to write a shell in Python

Question

I've written a small console application that can perform certain tasks. The user interface is similar to things like version control systems or yum etc. So basically you can think of it as a domain specific language. Now I'd like to write a (bash like) shell that can execute and auto-complete this language and has a command history (so I do not have to load and save the quite large xml files on each command). In a nutshell I want something like ipython but not for executing python code but my own DSL.

Are there any libraries that help me doing this? I see that there is a readline and rlcompleter module in python but its documentation seems to indicate that this is only for use with the python shell itself, or did I miss something there?

Brian Lyttle · Accepted Answer · 2016-01-14 17:18:40Z

23

You should check out the cmd and cmd2 modules. I think they will do what you want. There was a PyCon talk about these.

edited Jan 14, 2016 at 17:18

answered Apr 7, 2010 at 17:35

Brian Lyttle

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klaas Over a year ago

The link to the talk is not working anymore. An alternative link to the same talk is here on pyvideo. . The talk is called: Easy command-line applications with cmd and cmd2 (#153) from pycon us 2010.

zoli2k · Accepted Answer · 2010-04-07 17:49:02Z

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If you need an administrative shell to be accessed via network Twisted python framework's manhole is a good solution. Example:

http://www.devshed.com/c/a/Python/SSH-with-Twisted/3/

answered Apr 7, 2010 at 17:49

zoli2k

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