def add_command_line_options(cls, parser):
        """function to inject command line parameters"""
        if "add_argument" in dir(parser):
            return cls.add_command_line_options_argparse(parser)
        else:
            return cls.add_command_line_options_optparse(parser)
def add_command_line_options ( cls , parser ) : if "add_argument" in dir ( parser ) : return cls . add_command_line_options_argparse ( parser ) else : return cls . add_command_line_options_optparse ( parser )
function to inject command line parameters