services.py 文件源码

def _check_version(self):
        if self.version_check:
            output = await run_subprocess([self.binary, '--version'])
            match = self._version_re.search(output)
            if not match:
                raise ValueError(
                    'Could not determine version of geckodriver. To '
                    'disable version checking, set `version_check` to '
                    '`False`.'
                )
            version_str = match.group(1)
            version = StrictVersion(version_str)
            if version < StrictVersion('0.16.1'):
                raise ValueError(
                    f'Geckodriver version {version_str} is too old. 0.16.1 or '
                    f'higher is required. To disable version checking, set '
                    f'`version_check` to `False`.'
                )