An improved cmd.py for writing multi-command scripts and shells.
`cmdln.py` is an extension of Python's default `cmd.py` module that provides "a simple framework for writing line-oriented command interpreters". The idea (with both cmd.py and cmdln.py) is to be able to quickly build multi-sub-command tools (think cvs or svn) and/or simple interactive shells (think gdb or pdb). Cmdln's extensions make it more natural to write sub-commands, integrate optparse for simple option processing, and make having good command documentation easier.
27 January 2010
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