def __init__(self, raw_input, need_check=False):
    self.__raw_input = raw_input
    self.__var_ids = self._get_var_ids()
    self._check_non_variable(need_check)
def __init__(self, raw_input, need_check=False):
    self.__raw_input = raw_input
    self.__var_ids = self._get_var_ids()
    self._check_non_variable(need_check)