How to use _check_os_requirements method in autotest

Best Python code snippet using autotest_python

external_packages.py

Source:external_packages.py

...124            not exist it will be created.125        """126        if not self.verified_package:127            raise Error('Must call fetch() first.  - %s' % self.name)128        self._check_os_requirements()129        return self._build_and_install(install_dir)130    def _check_os_requirements(self):131        if not self.os_requirements:132            return133        failed = False134        for file_name, package_name in self.os_requirements.iteritems():135            if not os.path.exists(file_name):136                failed = True137                logging.error('File %s not found, %s needs it.',138                              file_name, self.name)139                logging.error('Perhaps you need to install something similar '140                              'to the %s package for OS first.', package_name)141        if failed:142            raise Error('Missing OS requirements for %s.  (see above)' %143                        self.name)144    def _build_and_install_current_dir_setup_py(self, install_dir):...

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