259     spec = spec_from_loader(fullname, self)
262         _exec(spec, module)
265         return _load(spec)
281         spec = module.__spec__
285         if spec is not None:
286             return _module_repr_from_spec(spec)
320             spec = self._spec
323                     del sys.modules[spec.name]
327                 _verbose_message('import {!r} # {!r}', spec.name, spec.loader)
462         spec = module.__spec__
466         if spec is not None:
467             return spec
497     spec = ModuleSpec(name, loader, origin=origin)
498     spec._set_fileattr = False if location is None else True
499     spec.cached = cached
500     spec.submodule_search_locations = submodule_search_locations
501     return spec
504 def _init_module_attrs(spec, module, *, override=False):  argument
510             module.__name__ = spec.name
515         loader = spec.loader
518             if spec.submodule_search_locations is not None:
524                 loader._path = spec.submodule_search_locations
525                 spec.loader = loader
544             module.__package__ = spec.parent
549         module.__spec__ = spec
554         if spec.submodule_search_locations is not None:
556                 module.__path__ = spec.submodule_search_locations
560     if spec.has_location:
563                 module.__file__ = spec.origin
568             if spec.cached is not None:
570                     module.__cached__ = spec.cached
576 def module_from_spec(spec):  argument
580     if hasattr(spec.loader, 'create_module'):
583         module = spec.loader.create_module(spec)
584     elif hasattr(spec.loader, 'exec_module'):
588         module = _new_module(spec.name)
589     _init_module_attrs(spec, module)
593 def _module_repr_from_spec(spec):  argument
596     name = '?' if spec.name is None else spec.name
597     if spec.origin is None:
598         if spec.loader is None:
601             return '<module {!r} ({!r})>'.format(name, spec.loader)
603         if spec.has_location:
604             return '<module {!r} from {!r}>'.format(name, spec.origin)
606             return '<module {!r} ({})>'.format(spec.name, spec.origin)
610 def _exec(spec, module):  argument
612     name = spec.name
617         if spec.loader is None:
618             if spec.submodule_search_locations is None:
619                 raise ImportError('missing loader', name=spec.name)
621             _init_module_attrs(spec, module, override=True)
623         _init_module_attrs(spec, module, override=True)
624         if not hasattr(spec.loader, 'exec_module'):
628             spec.loader.load_module(name)
630             spec.loader.exec_module(module)
634 def _load_backward_compatible(spec):  argument
638     spec.loader.load_module(spec.name)
640     module = sys.modules[spec.name]
643             module.__loader__ = spec.loader
653                 module.__package__ = spec.name.rpartition('.')[0]
658             module.__spec__ = spec
663 def _load_unlocked(spec):  argument
665     if spec.loader is not None:
667         if not hasattr(spec.loader, 'exec_module'):
668             return _load_backward_compatible(spec)
670     module = module_from_spec(spec)
672         if spec.loader is None:
673             if spec.submodule_search_locations is None:
674                 raise ImportError('missing loader', name=spec.name)
677             spec.loader.exec_module(module)
682     return sys.modules[spec.name]
686 def _load(spec):  argument
695     with _ModuleLockManager(spec.name):
696         return _load_unlocked(spec)
737         spec = cls.find_spec(fullname, path)
738         return spec.loader if spec is not None else None
741     def create_module(self, spec):  argument
743         if spec.name not in sys.builtin_module_names:
744             raise ImportError('{!r} is not a built-in module'.format(spec.name),
745                               name=spec.name)
746         return _call_with_frames_removed(_imp.create_builtin, spec)
809     def create_module(cls, spec):  argument
902                 spec = _find_spec_legacy(finder, name, path)
903                 if spec is None:
906                 spec = find_spec(name, path, target)
907         if spec is not None:
917                     return spec
920                         return spec
924                 return spec
963     spec = _find_spec(name, path)
964     if spec is None:
967         module = _load_unlocked(spec)
1055     spec = globals.get('__spec__')
1057         if spec is not None and package != spec.parent:
1062     elif spec is not None:
1063         return spec.parent
1110     spec = BuiltinImporter.find_spec(name)
1111     if spec is None:
1113     return _load_unlocked(spec)
1138             spec = _spec_from_module(module, loader)
1139             _init_module_attrs(spec, module)