'Required:
options_dict --the dictionary mapping options to a list
Returns:
a list of legal short options'

def __make_short_list_func(self, options_dict):

    legal_list = []
    keys = options_dict.keys()
    for key in keys:
        values = options_dict[key]
        try:
            legal_list.append(('-' + values[1]))
        except IndexError:
            pass
    return legal_list
