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Name	Size	Last Modified	Actions
📁 ..	-	2026-03-21 15:45
📄 __init__.py """Read resources contained within a package.""" from ._common import ( as_file, files, Package, ) from ._legacy import ( contents, open_binary, read_binary, open_text, read_text, is_resource, path, Resource, ) from .abc import ResourceReader __all__ = [ 'Package', 'Resource', 'ResourceReader', 'as_file', 'contents', 'files', 'is_resource', 'open_binary', 'open_text', 'path', 'read_binary', 'read_text', ]	506 B	2025-10-09 16:16
📁 __pycache__	-	2026-03-21 15:45
📄 _adapters.py from contextlib import suppress from io import TextIOWrapper from . import abc class SpecLoaderAdapter: """ Adapt a package spec to adapt the underlying loader. """ def __init__(self, spec, adapter=lambda spec: spec.loader): self.spec = spec self.loader = adapter(spec) def __getattr__(self, name): return getattr(self.spec, name) class TraversableResourcesLoader: """ Adapt a loader to provide TraversableResources. """ def __init__(self, spec): self.spec = spec def get_resource_reader(self, name): return CompatibilityFiles(self.spec)._native() def _io_wrapper(file, mode='r', args, kwargs): if mode == 'r': return TextIOWrapper(file, args, *kwargs) elif mode == 'rb': return file raise ValueError( "Invalid mode value '{}', only 'r' and 'rb' are supported".format(mode) ) class CompatibilityFiles: """ Adapter for an existing or non-existent resource reader to provide a compatibility .files(). """ class SpecPath(abc.Traversable): """ Path tied to a module spec. Can be read and exposes the resource reader children. """ def __init__(self, spec, reader): self._spec = spec self._reader = reader def iterdir(self): if not self._reader: return iter(()) return iter( CompatibilityFiles.ChildPath(self._reader, path) for path in self._reader.contents() ) def is_file(self): return False is_dir = is_file def joinpath(self, other): if not self._reader: return CompatibilityFiles.OrphanPath(other) return CompatibilityFiles.ChildPath(self._reader, other) @property def name(self): return self._spec.name def open(self, mode='r', args, *kwargs): return _io_wrapper(self._reader.open_resource(None), mode, args, *kwargs) class ChildPath(abc.Traversable): """ Path tied to a resource reader child. Can be read but doesn't expose any meaningful children. """ def __init__(self, reader, name): self._reader = reader self._name = name def iterdir(self): return iter(()) def is_file(self): return self._reader.is_resource(self.name) def is_dir(self): return not self.is_file() def joinpath(self, other): return CompatibilityFiles.OrphanPath(self.name, other) @property def name(self): return self._name def open(self, mode='r', args, *kwargs): return _io_wrapper( self._reader.open_resource(self.name), mode, args, *kwargs ) class OrphanPath(abc.Traversable): """ Orphan path, not tied to a module spec or resource reader. Can't be read and doesn't expose any meaningful children. """ def __init__(self, path_parts): if len(path_parts) < 1: raise ValueError('Need at least one path part to construct a path') self._path = path_parts def iterdir(self): return iter(()) def is_file(self): return False is_dir = is_file def joinpath(self, other): return CompatibilityFiles.OrphanPath(self._path, other) @property def name(self): return self._path[-1] def open(self, mode='r', args, **kwargs): raise FileNotFoundError("Can't open orphan path") def __init__(self, spec): self.spec = spec @property def _reader(self): with suppress(AttributeError): return self.spec.loader.get_resource_reader(self.spec.name) def _native(self): """ Return the native reader if it supports files(). """ reader = self._reader return reader if hasattr(reader, 'files') else self def __getattr__(self, attr): return getattr(self._reader, attr) def files(self): return CompatibilityFiles.SpecPath(self.spec, self._reader) def wrap_spec(package): """ Construct a package spec with traversable compatibility on the spec/loader/reader. """ return SpecLoaderAdapter(package.__spec__, TraversableResourcesLoader)	4.4 KB	2025-10-09 16:16
📄 _common.py import os import pathlib import tempfile import functools import contextlib import types import importlib from typing import Union, Optional from .abc import ResourceReader, Traversable from ._adapters import wrap_spec Package = Union[types.ModuleType, str] def files(package): # type: (Package) -> Traversable """ Get a Traversable resource from a package """ return from_package(get_package(package)) def get_resource_reader(package): # type: (types.ModuleType) -> Optional[ResourceReader] """ Return the package's loader if it's a ResourceReader. """ # We can't use # a issubclass() check here because apparently abc.'s __subclasscheck__() # hook wants to create a weak reference to the object, but # zipimport.zipimporter does not support weak references, resulting in a # TypeError. That seems terrible. spec = package.__spec__ reader = getattr(spec.loader, 'get_resource_reader', None) # type: ignore if reader is None: return None return reader(spec.name) # type: ignore def resolve(cand): # type: (Package) -> types.ModuleType return cand if isinstance(cand, types.ModuleType) else importlib.import_module(cand) def get_package(package): # type: (Package) -> types.ModuleType """Take a package name or module object and return the module. Raise an exception if the resolved module is not a package. """ resolved = resolve(package) if wrap_spec(resolved).submodule_search_locations is None: raise TypeError(f'{package!r} is not a package') return resolved def from_package(package): """ Return a Traversable object for the given package. """ spec = wrap_spec(package) reader = spec.loader.get_resource_reader(spec.name) return reader.files() @contextlib.contextmanager def _tempfile(reader, suffix='', # gh-93353: Keep a reference to call os.remove() in late Python # finalization. *, _os_remove=os.remove): # Not using tempfile.NamedTemporaryFile as it leads to deeper 'try' # blocks due to the need to close the temporary file to work on Windows # properly. fd, raw_path = tempfile.mkstemp(suffix=suffix) try: try: os.write(fd, reader()) finally: os.close(fd) del reader yield pathlib.Path(raw_path) finally: try: _os_remove(raw_path) except FileNotFoundError: pass @functools.singledispatch def as_file(path): """ Given a Traversable object, return that object as a path on the local file system in a context manager. """ return _tempfile(path.read_bytes, suffix=path.name) @as_file.register(pathlib.Path) @contextlib.contextmanager def _(path): """ Degenerate behavior for pathlib.Path objects. """ yield path	2.82 KB	2025-10-09 16:16
📄 _itertools.py from itertools import filterfalse from typing import ( Callable, Iterable, Iterator, Optional, Set, TypeVar, Union, ) # Type and type variable definitions _T = TypeVar('_T') _U = TypeVar('_U') def unique_everseen( iterable: Iterable[_T], key: Optional[Callable[[_T], _U]] = None ) -> Iterator[_T]: "List unique elements, preserving order. Remember all elements ever seen." # unique_everseen('AAAABBBCCDAABBB') --> A B C D # unique_everseen('ABBCcAD', str.lower) --> A B C D seen: Set[Union[_T, _U]] = set() seen_add = seen.add if key is None: for element in filterfalse(seen.__contains__, iterable): seen_add(element) yield element else: for element in iterable: k = key(element) if k not in seen: seen_add(k) yield element	884 B	2025-10-09 16:16
📄 _legacy.py import functools import os import pathlib import types import warnings from typing import Union, Iterable, ContextManager, BinaryIO, TextIO, Any from . import _common Package = Union[types.ModuleType, str] Resource = str def deprecated(func): @functools.wraps(func) def wrapper(args, kwargs): warnings.warn( f"{func.__name__} is deprecated. Use files() instead. " "Refer to https://importlib-resources.readthedocs.io" "/en/latest/using.html#migrating-from-legacy for migration advice.", DeprecationWarning, stacklevel=2, ) return func(args, *kwargs) return wrapper def normalize_path(path): # type: (Any) -> str """Normalize a path by ensuring it is a string. If the resulting string contains path separators, an exception is raised. """ str_path = str(path) parent, file_name = os.path.split(str_path) if parent: raise ValueError(f'{path!r} must be only a file name') return file_name @deprecated def open_binary(package: Package, resource: Resource) -> BinaryIO: """Return a file-like object opened for binary reading of the resource.""" return (_common.files(package) / normalize_path(resource)).open('rb') @deprecated def read_binary(package: Package, resource: Resource) -> bytes: """Return the binary contents of the resource.""" return (_common.files(package) / normalize_path(resource)).read_bytes() @deprecated def open_text( package: Package, resource: Resource, encoding: str = 'utf-8', errors: str = 'strict', ) -> TextIO: """Return a file-like object opened for text reading of the resource.""" return (_common.files(package) / normalize_path(resource)).open( 'r', encoding=encoding, errors=errors ) @deprecated def read_text( package: Package, resource: Resource, encoding: str = 'utf-8', errors: str = 'strict', ) -> str: """Return the decoded string of the resource. The decoding-related arguments have the same semantics as those of bytes.decode(). """ with open_text(package, resource, encoding, errors) as fp: return fp.read() @deprecated def contents(package: Package) -> Iterable[str]: """Return an iterable of entries in `package`. Note that not all entries are resources. Specifically, directories are not considered resources. Use `is_resource()` on each entry returned here to check if it is a resource or not. """ return [path.name for path in _common.files(package).iterdir()] @deprecated def is_resource(package: Package, name: str) -> bool: """True if `name` is a resource inside `package`. Directories are not* resources. """ resource = normalize_path(name) return any( traversable.name == resource and traversable.is_file() for traversable in _common.files(package).iterdir() ) @deprecated def path( package: Package, resource: Resource, ) -> ContextManager[pathlib.Path]: """A context manager providing a file path object to the resource. If the resource does not already exist on its own on the file system, a temporary file will be created. If the file was created, the file will be deleted upon exiting the context manager (no exception is raised if the file was deleted prior to the context manager exiting). """ return _common.as_file(_common.files(package) / normalize_path(resource))	3.41 KB	2025-10-09 16:16
📄 abc.py import abc import io import os from typing import Any, BinaryIO, Iterable, Iterator, NoReturn, Text, Optional from typing import runtime_checkable, Protocol from typing import Union StrPath = Union[str, os.PathLike[str]] __all__ = ["ResourceReader", "Traversable", "TraversableResources"] class ResourceReader(metaclass=abc.ABCMeta): """Abstract base class for loaders to provide resource reading support.""" @abc.abstractmethod def open_resource(self, resource: Text) -> BinaryIO: """Return an opened, file-like object for binary reading. The 'resource' argument is expected to represent only a file name. If the resource cannot be found, FileNotFoundError is raised. """ # This deliberately raises FileNotFoundError instead of # NotImplementedError so that if this method is accidentally called, # it'll still do the right thing. raise FileNotFoundError @abc.abstractmethod def resource_path(self, resource: Text) -> Text: """Return the file system path to the specified resource. The 'resource' argument is expected to represent only a file name. If the resource does not exist on the file system, raise FileNotFoundError. """ # This deliberately raises FileNotFoundError instead of # NotImplementedError so that if this method is accidentally called, # it'll still do the right thing. raise FileNotFoundError @abc.abstractmethod def is_resource(self, path: Text) -> bool: """Return True if the named 'path' is a resource. Files are resources, directories are not. """ raise FileNotFoundError @abc.abstractmethod def contents(self) -> Iterable[str]: """Return an iterable of entries in `package`.""" raise FileNotFoundError @runtime_checkable class Traversable(Protocol): """ An object with a subset of pathlib.Path methods suitable for traversing directories and opening files. Any exceptions that occur when accessing the backing resource may propagate unaltered. """ @abc.abstractmethod def iterdir(self) -> Iterator["Traversable"]: """ Yield Traversable objects in self """ def read_bytes(self) -> bytes: """ Read contents of self as bytes """ with self.open('rb') as strm: return strm.read() def read_text(self, encoding: Optional[str] = None) -> str: """ Read contents of self as text """ with self.open(encoding=encoding) as strm: return strm.read() @abc.abstractmethod def is_dir(self) -> bool: """ Return True if self is a directory """ @abc.abstractmethod def is_file(self) -> bool: """ Return True if self is a file """ @abc.abstractmethod def joinpath(self, descendants: StrPath) -> "Traversable": """ Return Traversable resolved with any descendants applied. Each descendant should be a path segment relative to self and each may contain multiple levels separated by ``posixpath.sep`` (``/``). """ def __truediv__(self, child: StrPath) -> "Traversable": """ Return Traversable child in self """ return self.joinpath(child) @abc.abstractmethod def open(self, mode='r', args, **kwargs): """ mode may be 'r' or 'rb' to open as text or binary. Return a handle suitable for reading (same as pathlib.Path.open). When opening as text, accepts encoding parameters such as those accepted by io.TextIOWrapper. """ @abc.abstractproperty def name(self) -> str: """ The base name of this object without any parent references. """ class TraversableResources(ResourceReader): """ The required interface for providing traversable resources. """ @abc.abstractmethod def files(self) -> "Traversable": """Return a Traversable object for the loaded package.""" def open_resource(self, resource: StrPath) -> io.BufferedReader: return self.files().joinpath(resource).open('rb') def resource_path(self, resource: Any) -> NoReturn: raise FileNotFoundError(resource) def is_resource(self, path: StrPath) -> bool: return self.files().joinpath(path).is_file() def contents(self) -> Iterator[str]: return (item.name for item in self.files().iterdir())	4.46 KB	2025-10-09 16:16
📄 readers.py import collections import operator import pathlib import zipfile from . import abc from ._itertools import unique_everseen def remove_duplicates(items): return iter(collections.OrderedDict.fromkeys(items)) class FileReader(abc.TraversableResources): def __init__(self, loader): self.path = pathlib.Path(loader.path).parent def resource_path(self, resource): """ Return the file system path to prevent `resources.path()` from creating a temporary copy. """ return str(self.path.joinpath(resource)) def files(self): return self.path class ZipReader(abc.TraversableResources): def __init__(self, loader, module): _, _, name = module.rpartition('.') self.prefix = loader.prefix.replace('\\', '/') + name + '/' self.archive = loader.archive def open_resource(self, resource): try: return super().open_resource(resource) except KeyError as exc: raise FileNotFoundError(exc.args[0]) def is_resource(self, path): # workaround for `zipfile.Path.is_file` returning true # for non-existent paths. target = self.files().joinpath(path) return target.is_file() and target.exists() def files(self): return zipfile.Path(self.archive, self.prefix) class MultiplexedPath(abc.Traversable): """ Given a series of Traversable objects, implement a merged version of the interface across all objects. Useful for namespace packages which may be multihomed at a single name. """ def __init__(self, paths): self._paths = list(map(pathlib.Path, remove_duplicates(paths))) if not self._paths: message = 'MultiplexedPath must contain at least one path' raise FileNotFoundError(message) if not all(path.is_dir() for path in self._paths): raise NotADirectoryError('MultiplexedPath only supports directories') def iterdir(self): files = (file for path in self._paths for file in path.iterdir()) return unique_everseen(files, key=operator.attrgetter('name')) def read_bytes(self): raise FileNotFoundError(f'{self} is not a file') def read_text(self, args, *kwargs): raise FileNotFoundError(f'{self} is not a file') def is_dir(self): return True def is_file(self): return False def joinpath(self, child): # first try to find child in current paths for file in self.iterdir(): if file.name == child: return file # if it does not exist, construct it with the first path return self._paths[0] / child __truediv__ = joinpath def open(self, args, *kwargs): raise FileNotFoundError(f'{self} is not a file') @property def name(self): return self._paths[0].name def __repr__(self): paths = ', '.join(f"'{path}'" for path in self._paths) return f'MultiplexedPath({paths})' class NamespaceReader(abc.TraversableResources): def __init__(self, namespace_path): if 'NamespacePath' not in str(namespace_path): raise ValueError('Invalid path') self.path = MultiplexedPath(list(namespace_path)) def resource_path(self, resource): """ Return the file system path to prevent `resources.path()` from creating a temporary copy. """ return str(self.path.joinpath(resource)) def files(self): return self.path	3.47 KB	2025-10-09 16:16
📄 simple.py """ Interface adapters for low-level readers. """ import abc import io import itertools from typing import BinaryIO, List from .abc import Traversable, TraversableResources class SimpleReader(abc.ABC): """ The minimum, low-level interface required from a resource provider. """ @abc.abstractproperty def package(self): # type: () -> str """ The name of the package for which this reader loads resources. """ @abc.abstractmethod def children(self): # type: () -> List['SimpleReader'] """ Obtain an iterable of SimpleReader for available child containers (e.g. directories). """ @abc.abstractmethod def resources(self): # type: () -> List[str] """ Obtain available named resources for this virtual package. """ @abc.abstractmethod def open_binary(self, resource): # type: (str) -> BinaryIO """ Obtain a File-like for a named resource. """ @property def name(self): return self.package.split('.')[-1] class ResourceHandle(Traversable): """ Handle to a named resource in a ResourceReader. """ def __init__(self, parent, name): # type: (ResourceContainer, str) -> None self.parent = parent self.name = name # type: ignore def is_file(self): return True def is_dir(self): return False def open(self, mode='r', args, kwargs): stream = self.parent.reader.open_binary(self.name) if 'b' not in mode: stream = io.TextIOWrapper(stream, args, *kwargs) return stream def joinpath(self, name): raise RuntimeError("Cannot traverse into a resource") class ResourceContainer(Traversable): """ Traversable container for a package's resources via its reader. """ def __init__(self, reader): # type: (SimpleReader) -> None self.reader = reader def is_dir(self): return True def is_file(self): return False def iterdir(self): files = (ResourceHandle(self, name) for name in self.reader.resources) dirs = map(ResourceContainer, self.reader.children()) return itertools.chain(files, dirs) def open(self, args, *kwargs): raise IsADirectoryError() @staticmethod def _flatten(compound_names): for name in compound_names: yield from name.split('/') def joinpath(self, descendants): if not descendants: return self names = self._flatten(descendants) target = next(names) return next( traversable for traversable in self.iterdir() if traversable.name == target ).joinpath(*names) class TraversableReader(TraversableResources, SimpleReader): """ A TraversableResources based on SimpleReader. Resource providers may derive from this class to provide the TraversableResources interface by supplying the SimpleReader interface. """ def files(self): return ResourceContainer(self)	3.05 KB	2025-10-09 16:16

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