How to use _init_on_demand method in avocado

Best Python code snippet using avocado_python Github


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...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....

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...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()...

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