'Requires:
nothing
Returns:
list of options
Logic:
Iterate through the self.__system string, looking for the last
option. The options are everything in the sysem string before the
last option.
Check to see that the options contain no arguments.'

def __get_just_options(self):

    highest = 0
    counter = 0
    found_options = 0
    for item in self.__system_string:
        if (item[0] == '-'):
            highest = counter
            found_options = 1
        counter += 1
    if found_options:
        just_options = self.__system_string[:(highest + 1)]
        arguments = self.__system_string[(highest + 1):]
    else:
        just_options = []
        arguments = self.__system_string
    if found_options:
        for item in just_options:
            if (item[0] != '-'):
                sys.stderr.write(('%s    is    an    argument    in    an    option    list\n' % item))
                self.__options_okay = 0
    return (just_options, arguments)
