@property<EOL><INDENT>def status(self):<DEDENT>
self._check_valid()<EOL>if self._ret_val == swiglpk.GLP_ENOPFS:<EOL><INDENT>return '<STR_LIT>'<EOL><DEDENT>elif self._ret_val == swiglpk.GLP_ENODFS:<EOL><INDENT>return '<STR_LIT>'<EOL><DEDENT>return str(swiglpk.glp_get_status(self._problem._p))<EOL>
Return string indicating the error encountered on failure.