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author | catherine.devlin@gmail.com |
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date | Thu, 28 Jul 2011 01:13:46 -0400 |
parents | 52ab96d4f179 |
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============================ Alternatives to cmd and cmd2 ============================ For programs that do not interact with the user in a continuous loop - programs that simply accept a set of arguments from the command line, return results, and do not keep the user within the program's environment - all you need are sys_\ .argv (the command-line arguments) and optparse_ (for parsing UNIX-style options and flags). .. _optparse: http://docs.python.org/library/optparse.html#module-optparse .. _sys: http://docs.python.org/library/sys.html#module-sys .. _curses: http://docs.python.org/library/curses.html#module-curses .. _cmd: http://docs.python.org/library/cmd.html#module-cmd The curses_ module produces applications that interact via a plaintext terminal window, but are not limited to simple text input and output; they can paint the screen with options that are selected from using the cursor keys. However, programming a curses_-based application is not as straightforward as using cmd_. Several packages in PyPI enable interactive command-line applications approximately similar in concept to cmd_ applications. None of them share cmd2's close ties to cmd, but they may be worth investigating nonetheless. * CmdLoop_ * cly_ * CmDO_ (As of Feb. 2010, webpage is missing.) * pycopia-CLI_ cmdln_, another package in PyPI, is an extension to cmd_ and, though it doesn't retain full cmd_ compatibility, shares its basic structure with cmd_. .. _cmdln: http://pypi.python.org/pypi/cmdln .. _CmdLoop: http://pypi.python.org/pypi/CmdLoop .. _cly: http://pypi.python.org/pypi/cly .. _CmDO: http://pypi.python.org/pypi/CmDO/0.7 .. _pycopia-CLI: http://pypi.python.org/pypi/pycopia-CLI/1.0 I've found several alternatives to cmd in the Cheese Shop - CmdLoop, cly, CMdO, and pycopia. cly looks wonderful, but I haven't been able to get it working under Windows, and that's a show-stopper for many potential sqlpython users. In any case, none of the alternatives are based on cmd - they're written from scratch, which means that a cmd-based app would need complete rewriting to use them. I like sticking close to the Standard Library whenever possible. cmd2 lets you do that.