def usage(self, subcommand):
if len(self.option_list) > <NUM_LIT:0>:<EOL><INDENT>usage = '<STR_LIT>' % (subcommand, self.args)<EOL><DEDENT>else:<EOL><INDENT>usage = '<STR_LIT>' % (subcommand, self.args)<EOL><DEDENT>if self.help:<EOL><INDENT>return '<STR_LIT>' % (usage, self.help)<EOL><DEDENT>else:<EOL><INDENT>return usage<EOL><DEDENT>
Return a brief description of how to use this command, by
default from the attribute ``self.help``.