gistfile1.txt

diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 9b66a9f054d..b21889694da 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -2188,10 +2188,33 @@ def _difference(minuend, subtrahend):
     return itertools.filterfalse(set(subtrahend).__contains__, minuend)
 
 
-class CompleteDirs(ZipFile):
+class InitializedState:
+    """
+    Mix-in to save the initialization state for pickling.
+    """
+
+    def __init__(self, *args, **kwargs):
+        self.__args = args
+        self.__kwargs = kwargs
+        super().__init__(*args, **kwargs)
+
+    def __getstate__(self):
+        return self.__args, self.__kwargs
+
+    def __setstate__(self, state):
+        args, kwargs = state
+        super().__init__(*args, **kwargs)
+
+
+class CompleteDirs(InitializedState, ZipFile):
     """
     A ZipFile subclass that ensures that implied directories
     are always included in the namelist.
+
+    >>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt']))
+    ['foo/', 'foo/bar/']
+    >>> list(CompleteDirs._implied_dirs(['foo/bar.txt', 'foo/bar/baz.txt', 'foo/bar/']))
+    ['foo/']
     """
 
     @staticmethod
@@ -2201,7 +2224,7 @@ def _implied_dirs(names):
         return _dedupe(_difference(as_dirs, names))
 
     def namelist(self):
-        names = super(CompleteDirs, self).namelist()
+        names = super().namelist()
         return names + list(self._implied_dirs(names))
 
     def _name_set(self):
@@ -2247,6 +2270,16 @@ def make(cls, source):
         source.__class__ = cls
         return source
 
+    @classmethod
+    def inject(cls, zf: ZipFile) -> ZipFile:
+        """
+        Given a writable zip file zf, inject directory entries for
+        any directories implied by the presence of children.
+        """
+        for name in cls._implied_dirs(zf.namelist()):
+            zf.writestr(name, b"")
+        return zf
+
 
 class FastLookup(CompleteDirs):
     """
@@ -2257,24 +2290,29 @@ class FastLookup(CompleteDirs):
     def namelist(self):
         with contextlib.suppress(AttributeError):
             return self.__names
-        self.__names = super(FastLookup, self).namelist()
+        self.__names = super().namelist()
         return self.__names
 
     def _name_set(self):
         with contextlib.suppress(AttributeError):
             return self.__lookup
-        self.__lookup = super(FastLookup, self)._name_set()
+        self.__lookup = super()._name_set()
         return self.__lookup
 
 
 def _extract_text_encoding(encoding=None, *args, **kwargs):
-    # stacklevel=3 so that the caller of the caller see any warning.
-    return io.text_encoding(encoding, 3), args, kwargs
+    # compute stack level so that the caller of the caller sees any warning.
+    is_pypy = sys.implementation.name == 'pypy'
+    stack_level = 3 + is_pypy
+    return io.text_encoding(encoding, stack_level), args, kwargs
 
 
 class Path:
     """
-    A pathlib-compatible interface for zip files.
+    A :class:`importlib.resources.abc.Traversable` interface for zip files.
+
+    Implements many of the features users enjoy from
+    :class:`pathlib.Path`.
 
     Consider a zip file with this structure::
 
@@ -2294,13 +2332,13 @@ class Path:
 
     Path accepts the zipfile object itself or a filename
 
-    >>> root = Path(zf)
+    >>> path = Path(zf)
 
     From there, several path operations are available.
 
     Directory iteration (including the zip file itself):
 
-    >>> a, b = root.iterdir()
+    >>> a, b = path.iterdir()
     >>> a
     Path('mem/abcde.zip', 'a.txt')
     >>> b
@@ -2321,7 +2359,7 @@ class Path:
 
     Read text:
 
-    >>> c.read_text()
+    >>> c.read_text(encoding='utf-8')
     'content of c'
 
     existence:
@@ -2338,16 +2376,38 @@ class Path:
     'mem/abcde.zip/b/c.txt'
 
     At the root, ``name``, ``filename``, and ``parent``
-    resolve to the zipfile. Note these attributes are not
-    valid and will raise a ``ValueError`` if the zipfile
-    has no filename.
+    resolve to the zipfile.
 
-    >>> root.name
+    >>> str(path)
+    'mem/abcde.zip/'
+    >>> path.name
     'abcde.zip'
-    >>> str(root.filename).replace(os.sep, posixpath.sep)
-    'mem/abcde.zip'
-    >>> str(root.parent)
+    >>> path.filename == pathlib.Path('mem/abcde.zip')
+    True
+    >>> str(path.parent)
     'mem'
+
+    If the zipfile has no filename, such attributes are not
+    valid and accessing them will raise an Exception.
+
+    >>> zf.filename = None
+    >>> path.name
+    Traceback (most recent call last):
+    ...
+    TypeError: ...
+
+    >>> path.filename
+    Traceback (most recent call last):
+    ...
+    TypeError: ...
+
+    >>> path.parent
+    Traceback (most recent call last):
+    ...
+    TypeError: ...
+
+    # workaround python/cpython#106763
+    >>> pass
     """
 
     __repr = "{self.__class__.__name__}({self.root.filename!r}, {self.at!r})"
@@ -2365,6 +2425,18 @@ def __init__(self, root, at=""):
         self.root = FastLookup.make(root)
         self.at = at
 
+    def __eq__(self, other):
+        """
+        >>> Path(ZipFile(io.BytesIO(), 'w')) == 'foo'
+        False
+        """
+        if self.__class__ is not other.__class__:
+            return NotImplemented
+        return (self.root, self.at) == (other.root, other.at)
+
+    def __hash__(self):
+        return hash((self.root, self.at))
+
     def open(self, mode='r', *args, pwd=None, **kwargs):
         """
         Open this entry as text or binary following the semantics
@@ -2385,9 +2457,24 @@ def open(self, mode='r', *args, pwd=None, **kwargs):
         encoding, args, kwargs = _extract_text_encoding(*args, **kwargs)
         return io.TextIOWrapper(stream, encoding, *args, **kwargs)
 
+    def _base(self):
+        return pathlib.PurePosixPath(self.at or self.root.filename)
+
     @property
     def name(self):
-        return pathlib.Path(self.at).name or self.filename.name
+        return self._base().name
+
+    @property
+    def suffix(self):
+        return self._base().suffix
+
+    @property
+    def suffixes(self):
+        return self._base().suffixes
+
+    @property
+    def stem(self):
+        return self._base().stem
 
     @property
     def filename(self):
@@ -2423,6 +2510,32 @@ def iterdir(self):
         subs = map(self._next, self.root.namelist())
         return filter(self._is_child, subs)
 
+    def match(self, path_pattern):
+        return pathlib.PurePosixPath(self.at).match(path_pattern)
+
+    def is_symlink(self):
+        """
+        Return whether this path is a symlink.
+        """
+        info = self.root.getinfo(self.at)
+        mode = info.external_attr >> 16
+        return stat.S_ISLNK(mode)
+
+    def glob(self, pattern):
+        if not pattern:
+            raise ValueError(f"Unacceptable pattern: {pattern!r}")
+
+        prefix = re.escape(self.at)
+        tr = Translator(seps='/')
+        matches = re.compile(prefix + tr.translate(pattern)).fullmatch
+        return map(self._next, filter(matches, self.root.namelist()))
+
+    def rglob(self, pattern):
+        return self.glob(f'**/{pattern}')
+
+    def relative_to(self, other, *extra):
+        return posixpath.relpath(str(self), str(other.joinpath(*extra)))
+
     def __str__(self):
         return posixpath.join(self.root.filename, self.at)