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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _run_configure(subcmd, args):
 """Runs the configuration step for the specified sub-command. """

    maps = {
        "packages": _conf_packages
        }
    if subcmd in maps:
        maps[subcmd](args)
    else:
        msg.warn("'configure' sub-command {} is not supported.".format(subcmd))