How to use _init_on_demand method in avocado

Best Python code snippet using avocado_python

manager.py

Source:manager.py

...15        self.backend = None16        self.lowlevel_base_command = None17        self.base_command = None18        self.pm_version = None19    def _init_on_demand(self):20        """21        Determines the best supported package management system for the given22        operating system running and initializes the appropriate backend.23        """24        if not self.initialized:25            inspector = SystemInspector()26            backend_type = inspector.get_package_management()27            if backend_type not in SUPPORTED_PACKAGE_MANAGERS:28                raise NotImplementedError('Unimplemented package management '29                                          'system: %s.' % backend_type)30            backend = SUPPORTED_PACKAGE_MANAGERS[backend_type]31            self.backend = backend()32            self.initialized = True33    def __getattr__(self, name):34        self._init_on_demand()35        return self.backend.__getattribute__(name)36    def is_capable(self):37        """Checks if environment is capable by initializing the backend."""38        try:39            self._init_on_demand()40        except NotImplementedError:41            pass42        return self.initialized43    @staticmethod44    def extract_from_package(package_path, dest_path=None):45        """Try to extract a package content into a destination directory.46        It will try to see if the package is valid against all supported47        package managers and if any is found, then extracts its content into48        the extract_path.49        Raises NotImplementedError when a non-supported package is used.50        :param str package_path: package file path.51        :param str dest_path: destination path to extract. Default is the52                              current directory.53        :returns: destination path were the package it was extracted....

boottool.py

Source:boottool.py

...21        self.instantiated = False22        if path is None:23            path = GRUBBY_DEFAULT_SYSTEM_PATH24        self.path = path25    def _init_on_demand(self):26        if not self.instantiated:27            try:28                install_grubby_if_necessary()29                Grubby.__init__(self, self.path)30                self.instantiated = True31            except Exception, e:32                raise error.JobError("Unable to instantiate boottool: %s" % e)33    def __getattr__(self, name):34        self._init_on_demand()...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.