def version_ok(self,version):
        return self.attribute is None or self.format is None or \
            str(version)!="unknown" and version >= self.requested_version
Is 'version' sufficiently up-to-date?
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/setuptools-0.6c11/setuptools/depends.py/Require.version_ok