FM / python3.8

/snap/core20/2769/usr/lib/python3.8

Name	Size	Mode	Actions
asyncio/	-	0755	rm
collections/	-	0755	rm
concurrent/	-	0755	rm
ctypes/	-	0755	rm
curses/	-	0755	rm
dbm/	-	0755	rm
distutils/	-	0755	rm
email/	-	0755	rm
encodings/	-	0755	rm
html/	-	0755	rm
http/	-	0755	rm
importlib/	-	0755	rm
json/	-	0755	rm
lib-dynload/	-	0755	rm
lib2to3/	-	0755	rm
logging/	-	0755	rm
multiprocessing/	-	0755	rm
pydoc_data/	-	0755	rm
sqlite3/	-	0755	rm
test/	-	0755	rm
unittest/	-	0755	rm
urllib/	-	0755	rm
venv/	-	0755	rm
wsgiref/	-	0755	rm
xml/	-	0755	rm
xmlrpc/	-	0755	rm
__pycache__/	-	0755	rm
abc.py	4489	0644	edit dl rm
aifc.py	32814	0644	edit dl rm
antigravity.py	477	0644	edit dl rm
argparse.py	96311	0644	edit dl rm
ast.py	19234	0644	edit dl rm
asynchat.py	11328	0644	edit dl rm
asyncore.py	20094	0644	edit dl rm
base64.py	20382	0755	edit dl rm
bdb.py	32056	0644	edit dl rm
binhex.py	13954	0644	edit dl rm
bisect.py	2214	0644	edit dl rm
bz2.py	12558	0644	edit dl rm
calendar.py	24832	0644	edit dl rm
cgi.py	33932	0755	edit dl rm
cgitb.py	12096	0644	edit dl rm
chunk.py	5435	0644	edit dl rm
cmd.py	14860	0644	edit dl rm
code.py	10622	0644	edit dl rm
codecs.py	36667	0644	edit dl rm
codeop.py	6330	0644	edit dl rm
colorsys.py	4064	0644	edit dl rm
compileall.py	13678	0644	edit dl rm
configparser.py	54374	0644	edit dl rm
contextlib.py	24995	0644	edit dl rm
contextvars.py	129	0644	edit dl rm
copy.py	8661	0644	edit dl rm
copyreg.py	7135	0644	edit dl rm
cProfile.py	6998	0755	edit dl rm
crypt.py	3610	0644	edit dl rm
csv.py	16144	0644	edit dl rm
dataclasses.py	49973	0644	edit dl rm
datetime.py	88287	0644	edit dl rm
decimal.py	320	0644	edit dl rm
difflib.py	84058	0644	edit dl rm
dis.py	20570	0644	edit dl rm
doctest.py	104543	0644	edit dl rm
dummy_threading.py	2815	0644	edit dl rm
enum.py	38136	0644	edit dl rm
filecmp.py	9830	0644	edit dl rm
fileinput.py	14709	0644	edit dl rm
fnmatch.py	4079	0644	edit dl rm
formatter.py	15143	0644	edit dl rm
fractions.py	24329	0644	edit dl rm
ftplib.py	35129	0644	edit dl rm
functools.py	37406	0644	edit dl rm
genericpath.py	4975	0644	edit dl rm
getopt.py	7489	0644	edit dl rm
getpass.py	5994	0644	edit dl rm
gettext.py	27565	0644	edit dl rm
glob.py	5697	0644	edit dl rm
gzip.py	21413	0644	edit dl rm
hashlib.py	9730	0644	edit dl rm
heapq.py	22877	0644	edit dl rm
hmac.py	6629	0644	edit dl rm
imaplib.py	53775	0644	edit dl rm
imghdr.py	3808	0644	edit dl rm
imp.py	10536	0644	edit dl rm
inspect.py	118550	0644	edit dl rm
io.py	3541	0644	edit dl rm
ipaddress.py	76336	0644	edit dl rm
keyword.py	945	0644	edit dl rm
LICENSE.txt	13925	0644	edit dl rm
linecache.py	5330	0644	edit dl rm
locale.py	78195	0644	edit dl rm
lzma.py	12983	0644	edit dl rm
mailbox.py	78661	0644	edit dl rm
mailcap.py	9067	0644	edit dl rm
mimetypes.py	21664	0644	edit dl rm
modulefinder.py	24430	0644	edit dl rm
netrc.py	5566	0644	edit dl rm
nntplib.py	43261	0644	edit dl rm
ntpath.py	25814	0644	edit dl rm
nturl2path.py	2887	0644	edit dl rm
numbers.py	10244	0644	edit dl rm
opcode.py	5808	0644	edit dl rm
operator.py	10711	0644	edit dl rm
optparse.py	60369	0644	edit dl rm
os.py	38995	0644	edit dl rm
pathlib.py	52610	0644	edit dl rm
pdb.py	62738	0755	edit dl rm
pickle.py	64467	0644	edit dl rm
pickletools.py	93486	0644	edit dl rm
pipes.py	8916	0644	edit dl rm
pkgutil.py	21461	0644	edit dl rm
platform.py	40425	0755	edit dl rm
plistlib.py	32460	0644	edit dl rm
poplib.py	15200	0644	edit dl rm
posixpath.py	15500	0644	edit dl rm
pprint.py	21484	0644	edit dl rm
profile.py	23534	0755	edit dl rm
pstats.py	27345	0644	edit dl rm
pty.py	4807	0644	edit dl rm
pyclbr.py	15255	0644	edit dl rm
pydoc.py	106863	0755	edit dl rm
py_compile.py	8148	0644	edit dl rm
queue.py	11356	0644	edit dl rm
quopri.py	7252	0755	edit dl rm
random.py	28802	0644	edit dl rm
re.py	15861	0644	edit dl rm
reprlib.py	5267	0644	edit dl rm
rlcompleter.py	7097	0644	edit dl rm
runpy.py	12052	0644	edit dl rm
sched.py	6442	0644	edit dl rm
secrets.py	2038	0644	edit dl rm
selectors.py	18561	0644	edit dl rm
shelve.py	8527	0644	edit dl rm
shlex.py	13325	0644	edit dl rm
shutil.py	51474	0644	edit dl rm
signal.py	2273	0644	edit dl rm
site.py	22336	0644	edit dl rm
sitecustomize.py	-	0	edit dl rm
smtpd.py	34709	0755	edit dl rm
smtplib.py	44804	0755	edit dl rm
sndhdr.py	7099	0644	edit dl rm
socket.py	35243	0644	edit dl rm
socketserver.py	27296	0644	edit dl rm
sre_compile.py	26695	0644	edit dl rm
sre_constants.py	7154	0644	edit dl rm
sre_parse.py	40230	0644	edit dl rm
ssl.py	52363	0644	edit dl rm
stat.py	5485	0644	edit dl rm
statistics.py	39690	0644	edit dl rm
string.py	10535	0644	edit dl rm
stringprep.py	12917	0644	edit dl rm
struct.py	257	0644	edit dl rm
subprocess.py	77330	0644	edit dl rm
sunau.py	18375	0644	edit dl rm
symbol.py	2109	0644	edit dl rm
symtable.py	8021	0644	edit dl rm
sysconfig.py	25035	0644	edit dl rm
tabnanny.py	11406	0755	edit dl rm
tarfile.py	95580	0755	edit dl rm
telnetlib.py	23254	0644	edit dl rm
tempfile.py	32920	0644	edit dl rm
textwrap.py	19407	0644	edit dl rm
this.py	1003	0644	edit dl rm
threading.py	50820	0644	edit dl rm
timeit.py	13480	0755	edit dl rm
token.py	2368	0644	edit dl rm
tokenize.py	25841	0644	edit dl rm
trace.py	29858	0755	edit dl rm
traceback.py	23611	0644	edit dl rm
tracemalloc.py	17076	0644	edit dl rm
tty.py	879	0644	edit dl rm
turtle.py	143716	0644	edit dl rm
types.py	9713	0644	edit dl rm
typing.py	68962	0644	edit dl rm
uu.py	6957	0755	edit dl rm
uuid.py	30466	0644	edit dl rm
warnings.py	19688	0644	edit dl rm
wave.py	18230	0644	edit dl rm
weakref.py	21387	0644	edit dl rm
webbrowser.py	24083	0755	edit dl rm
xdrlib.py	5913	0644	edit dl rm
zipapp.py	7535	0644	edit dl rm
zipfile.py	89135	0644	edit dl rm
zipimport.py	30765	0644	edit dl rm
_bootlocale.py	1801	0644	edit dl rm
_collections_abc.py	26100	0644	edit dl rm
_compat_pickle.py	8749	0644	edit dl rm
_compression.py	5340	0644	edit dl rm
_dummy_thread.py	6027	0644	edit dl rm
_markupbase.py	14598	0644	edit dl rm
_osx_support.py	21774	0644	edit dl rm
_pydecimal.py	228666	0644	edit dl rm
_pyio.py	93177	0644	edit dl rm
_py_abc.py	6189	0644	edit dl rm
_sitebuiltins.py	3115	0644	edit dl rm
_strptime.py	25268	0644	edit dl rm
_sysconfigdata__linux_x86_64-linux-gnu.py	25834	0644	edit dl rm
_sysconfigdata__x86_64-linux-gnu.py	25834	0644	edit dl rm
_threading_local.py	7220	0644	edit dl rm
_weakrefset.py	5735	0644	edit dl rm
__future__.py	5147	0644	edit dl rm
__phello__.foo.py	64	0644	edit dl rm

Edit: /snap/core20/2769/usr/lib/python3.8/pkgutil.py (21461B)

"""Utilities to support packages."""

from collections import namedtuple
from functools import singledispatch as simplegeneric
import importlib
import importlib.util
import importlib.machinery
import os
import os.path
import sys
from types import ModuleType
import warnings

__all__ = [
    'get_importer', 'iter_importers', 'get_loader', 'find_loader',
    'walk_packages', 'iter_modules', 'get_data',
    'ImpImporter', 'ImpLoader', 'read_code', 'extend_path',
    'ModuleInfo',
]

ModuleInfo = namedtuple('ModuleInfo', 'module_finder name ispkg')
ModuleInfo.__doc__ = 'A namedtuple with minimal info about a module.'

def _get_spec(finder, name):
    """Return the finder-specific module spec."""
    # Works with legacy finders.
    try:
        find_spec = finder.find_spec
    except AttributeError:
        loader = finder.find_module(name)
        if loader is None:
            return None
        return importlib.util.spec_from_loader(name, loader)
    else:
        return find_spec(name)

def read_code(stream):
    # This helper is needed in order for the PEP 302 emulation to
    # correctly handle compiled files
    import marshal

magic = stream.read(4)
    if magic != importlib.util.MAGIC_NUMBER:
        return None

stream.read(12) # Skip rest of the header
    return marshal.load(stream)

def walk_packages(path=None, prefix='', onerror=None):
    """Yields ModuleInfo for all modules recursively
    on path, or, if path is None, all accessible modules.

'path' should be either None or a list of paths to look for
    modules in.

'prefix' is a string to output on the front of every module name
    on output.

Note that this function must import all *packages* (NOT all
    modules!) on the given path, in order to access the __path__
    attribute to find submodules.

'onerror' is a function which gets called with one argument (the
    name of the package which was being imported) if any exception
    occurs while trying to import a package.  If no onerror function is
    supplied, ImportErrors are caught and ignored, while all other
    exceptions are propagated, terminating the search.

Examples:

# list all modules python can access
    walk_packages()

# list all submodules of ctypes
    walk_packages(ctypes.__path__, ctypes.__name__+'.')
    """

def seen(p, m={}):
        if p in m:
            return True
        m[p] = True

for info in iter_modules(path, prefix):
        yield info

if info.ispkg:
            try:
                __import__(info.name)
            except ImportError:
                if onerror is not None:
                    onerror(info.name)
            except Exception:
                if onerror is not None:
                    onerror(info.name)
                else:
                    raise
            else:
                path = getattr(sys.modules[info.name], '__path__', None) or []

# don't traverse path items we've seen before
                path = [p for p in path if not seen(p)]

yield from walk_packages(path, info.name+'.', onerror)

def iter_modules(path=None, prefix=''):
    """Yields ModuleInfo for all submodules on path,
    or, if path is None, all top-level modules on sys.path.

'path' should be either None or a list of paths to look for
    modules in.

'prefix' is a string to output on the front of every module name
    on output.
    """
    if path is None:
        importers = iter_importers()
    elif isinstance(path, str):
        raise ValueError("path must be None or list of paths to look for "
                        "modules in")
    else:
        importers = map(get_importer, path)

yielded = {}
    for i in importers:
        for name, ispkg in iter_importer_modules(i, prefix):
            if name not in yielded:
                yielded[name] = 1
                yield ModuleInfo(i, name, ispkg)

@simplegeneric
def iter_importer_modules(importer, prefix=''):
    if not hasattr(importer, 'iter_modules'):
        return []
    return importer.iter_modules(prefix)

# Implement a file walker for the normal importlib path hook
def _iter_file_finder_modules(importer, prefix=''):
    if importer.path is None or not os.path.isdir(importer.path):
        return

yielded = {}
    import inspect
    try:
        filenames = os.listdir(importer.path)
    except OSError:
        # ignore unreadable directories like import does
        filenames = []
    filenames.sort()  # handle packages before same-named modules

for fn in filenames:
        modname = inspect.getmodulename(fn)
        if modname=='__init__' or modname in yielded:
            continue

path = os.path.join(importer.path, fn)
        ispkg = False

if not modname and os.path.isdir(path) and '.' not in fn:
            modname = fn
            try:
                dircontents = os.listdir(path)
            except OSError:
                # ignore unreadable directories like import does
                dircontents = []
            for fn in dircontents:
                subname = inspect.getmodulename(fn)
                if subname=='__init__':
                    ispkg = True
                    break
            else:
                continue    # not a package

if modname and '.' not in modname:
            yielded[modname] = 1
            yield prefix + modname, ispkg

iter_importer_modules.register(
    importlib.machinery.FileFinder, _iter_file_finder_modules)

def _import_imp():
    global imp
    with warnings.catch_warnings():
        warnings.simplefilter('ignore', DeprecationWarning)
        imp = importlib.import_module('imp')

class ImpImporter:
    """PEP 302 Finder that wraps Python's "classic" import algorithm

ImpImporter(dirname) produces a PEP 302 finder that searches that
    directory.  ImpImporter(None) produces a PEP 302 finder that searches
    the current sys.path, plus any modules that are frozen or built-in.

Note that ImpImporter does not currently support being used by placement
    on sys.meta_path.
    """

def __init__(self, path=None):
        global imp
        warnings.warn("This emulation is deprecated, use 'importlib' instead",
             DeprecationWarning)
        _import_imp()
        self.path = path

def find_module(self, fullname, path=None):
        # Note: we ignore 'path' argument since it is only used via meta_path
        subname = fullname.split(".")[-1]
        if subname != fullname and self.path is None:
            return None
        if self.path is None:
            path = None
        else:
            path = [os.path.realpath(self.path)]
        try:
            file, filename, etc = imp.find_module(subname, path)
        except ImportError:
            return None
        return ImpLoader(fullname, file, filename, etc)

def iter_modules(self, prefix=''):
        if self.path is None or not os.path.isdir(self.path):
            return

yielded = {}
        import inspect
        try:
            filenames = os.listdir(self.path)
        except OSError:
            # ignore unreadable directories like import does
            filenames = []
        filenames.sort()  # handle packages before same-named modules

for fn in filenames:
            modname = inspect.getmodulename(fn)
            if modname=='__init__' or modname in yielded:
                continue

path = os.path.join(self.path, fn)
            ispkg = False

if not modname and os.path.isdir(path) and '.' not in fn:
                modname = fn
                try:
                    dircontents = os.listdir(path)
                except OSError:
                    # ignore unreadable directories like import does
                    dircontents = []
                for fn in dircontents:
                    subname = inspect.getmodulename(fn)
                    if subname=='__init__':
                        ispkg = True
                        break
                else:
                    continue    # not a package

if modname and '.' not in modname:
                yielded[modname] = 1
                yield prefix + modname, ispkg

class ImpLoader:
    """PEP 302 Loader that wraps Python's "classic" import algorithm
    """
    code = source = None

def __init__(self, fullname, file, filename, etc):
        warnings.warn("This emulation is deprecated, use 'importlib' instead",
                      DeprecationWarning)
        _import_imp()
        self.file = file
        self.filename = filename
        self.fullname = fullname
        self.etc = etc

def load_module(self, fullname):
        self._reopen()
        try:
            mod = imp.load_module(fullname, self.file, self.filename, self.etc)
        finally:
            if self.file:
                self.file.close()
        # Note: we don't set __loader__ because we want the module to look
        # normal; i.e. this is just a wrapper for standard import machinery
        return mod

def get_data(self, pathname):
        with open(pathname, "rb") as file:
            return file.read()

def _reopen(self):
        if self.file and self.file.closed:
            mod_type = self.etc[2]
            if mod_type==imp.PY_SOURCE:
                self.file = open(self.filename, 'r')
            elif mod_type in (imp.PY_COMPILED, imp.C_EXTENSION):
                self.file = open(self.filename, 'rb')

def _fix_name(self, fullname):
        if fullname is None:
            fullname = self.fullname
        elif fullname != self.fullname:
            raise ImportError("Loader for module %s cannot handle "
                              "module %s" % (self.fullname, fullname))
        return fullname

def is_package(self, fullname):
        fullname = self._fix_name(fullname)
        return self.etc[2]==imp.PKG_DIRECTORY

def get_code(self, fullname=None):
        fullname = self._fix_name(fullname)
        if self.code is None:
            mod_type = self.etc[2]
            if mod_type==imp.PY_SOURCE:
                source = self.get_source(fullname)
                self.code = compile(source, self.filename, 'exec')
            elif mod_type==imp.PY_COMPILED:
                self._reopen()
                try:
                    self.code = read_code(self.file)
                finally:
                    self.file.close()
            elif mod_type==imp.PKG_DIRECTORY:
                self.code = self._get_delegate().get_code()
        return self.code

def get_source(self, fullname=None):
        fullname = self._fix_name(fullname)
        if self.source is None:
            mod_type = self.etc[2]
            if mod_type==imp.PY_SOURCE:
                self._reopen()
                try:
                    self.source = self.file.read()
                finally:
                    self.file.close()
            elif mod_type==imp.PY_COMPILED:
                if os.path.exists(self.filename[:-1]):
                    with open(self.filename[:-1], 'r') as f:
                        self.source = f.read()
            elif mod_type==imp.PKG_DIRECTORY:
                self.source = self._get_delegate().get_source()
        return self.source

def _get_delegate(self):
        finder = ImpImporter(self.filename)
        spec = _get_spec(finder, '__init__')
        return spec.loader

def get_filename(self, fullname=None):
        fullname = self._fix_name(fullname)
        mod_type = self.etc[2]
        if mod_type==imp.PKG_DIRECTORY:
            return self._get_delegate().get_filename()
        elif mod_type in (imp.PY_SOURCE, imp.PY_COMPILED, imp.C_EXTENSION):
            return self.filename
        return None

try:
    import zipimport
    from zipimport import zipimporter

def iter_zipimport_modules(importer, prefix=''):
        dirlist = sorted(zipimport._zip_directory_cache[importer.archive])
        _prefix = importer.prefix
        plen = len(_prefix)
        yielded = {}
        import inspect
        for fn in dirlist:
            if not fn.startswith(_prefix):
                continue

fn = fn[plen:].split(os.sep)

if len(fn)==2 and fn[1].startswith('__init__.py'):
                if fn[0] not in yielded:
                    yielded[fn[0]] = 1
                    yield prefix + fn[0], True

if len(fn)!=1:
                continue

modname = inspect.getmodulename(fn[0])
            if modname=='__init__':
                continue

if modname and '.' not in modname and modname not in yielded:
                yielded[modname] = 1
                yield prefix + modname, False

iter_importer_modules.register(zipimporter, iter_zipimport_modules)

except ImportError:
    pass

def get_importer(path_item):
    """Retrieve a finder for the given path item

The returned finder is cached in sys.path_importer_cache
    if it was newly created by a path hook.

The cache (or part of it) can be cleared manually if a
    rescan of sys.path_hooks is necessary.
    """
    try:
        importer = sys.path_importer_cache[path_item]
    except KeyError:
        for path_hook in sys.path_hooks:
            try:
                importer = path_hook(path_item)
                sys.path_importer_cache.setdefault(path_item, importer)
                break
            except ImportError:
                pass
        else:
            importer = None
    return importer

def iter_importers(fullname=""):
    """Yield finders for the given module name

If fullname contains a '.', the finders will be for the package
    containing fullname, otherwise they will be all registered top level
    finders (i.e. those on both sys.meta_path and sys.path_hooks).

If the named module is in a package, that package is imported as a side
    effect of invoking this function.

If no module name is specified, all top level finders are produced.
    """
    if fullname.startswith('.'):
        msg = "Relative module name {!r} not supported".format(fullname)
        raise ImportError(msg)
    if '.' in fullname:
        # Get the containing package's __path__
        pkg_name = fullname.rpartition(".")[0]
        pkg = importlib.import_module(pkg_name)
        path = getattr(pkg, '__path__', None)
        if path is None:
            return
    else:
        yield from sys.meta_path
        path = sys.path
    for item in path:
        yield get_importer(item)

def get_loader(module_or_name):
    """Get a "loader" object for module_or_name

Returns None if the module cannot be found or imported.
    If the named module is not already imported, its containing package
    (if any) is imported, in order to establish the package __path__.
    """
    if module_or_name in sys.modules:
        module_or_name = sys.modules[module_or_name]
        if module_or_name is None:
            return None
    if isinstance(module_or_name, ModuleType):
        module = module_or_name
        loader = getattr(module, '__loader__', None)
        if loader is not None:
            return loader
        if getattr(module, '__spec__', None) is None:
            return None
        fullname = module.__name__
    else:
        fullname = module_or_name
    return find_loader(fullname)

def find_loader(fullname):
    """Find a "loader" object for fullname

This is a backwards compatibility wrapper around
    importlib.util.find_spec that converts most failures to ImportError
    and only returns the loader rather than the full spec
    """
    if fullname.startswith('.'):
        msg = "Relative module name {!r} not supported".format(fullname)
        raise ImportError(msg)
    try:
        spec = importlib.util.find_spec(fullname)
    except (ImportError, AttributeError, TypeError, ValueError) as ex:
        # This hack fixes an impedance mismatch between pkgutil and
        # importlib, where the latter raises other errors for cases where
        # pkgutil previously raised ImportError
        msg = "Error while finding loader for {!r} ({}: {})"
        raise ImportError(msg.format(fullname, type(ex), ex)) from ex
    return spec.loader if spec is not None else None

def extend_path(path, name):
    """Extend a package's path.

Intended use is to place the following code in a package's __init__.py:

from pkgutil import extend_path
        __path__ = extend_path(__path__, __name__)

This will add to the package's __path__ all subdirectories of
    directories on sys.path named after the package.  This is useful
    if one wants to distribute different parts of a single logical
    package as multiple directories.

It also looks for *.pkg files beginning where * matches the name
    argument.  This feature is similar to *.pth files (see site.py),
    except that it doesn't special-case lines starting with 'import'.
    A *.pkg file is trusted at face value: apart from checking for
    duplicates, all entries found in a *.pkg file are added to the
    path, regardless of whether they are exist the filesystem.  (This
    is a feature.)

If the input path is not a list (as is the case for frozen
    packages) it is returned unchanged.  The input path is not
    modified; an extended copy is returned.  Items are only appended
    to the copy at the end.

It is assumed that sys.path is a sequence.  Items of sys.path that
    are not (unicode or 8-bit) strings referring to existing
    directories are ignored.  Unicode items of sys.path that cause
    errors when used as filenames may cause this function to raise an
    exception (in line with os.path.isdir() behavior).
    """

if not isinstance(path, list):
        # This could happen e.g. when this is called from inside a
        # frozen package.  Return the path unchanged in that case.
        return path

sname_pkg = name + ".pkg"

path = path[:] # Start with a copy of the existing path

parent_package, _, final_name = name.rpartition('.')
    if parent_package:
        try:
            search_path = sys.modules[parent_package].__path__
        except (KeyError, AttributeError):
            # We can't do anything: find_loader() returns None when
            # passed a dotted name.
            return path
    else:
        search_path = sys.path

for dir in search_path:
        if not isinstance(dir, str):
            continue

finder = get_importer(dir)
        if finder is not None:
            portions = []
            if hasattr(finder, 'find_spec'):
                spec = finder.find_spec(final_name)
                if spec is not None:
                    portions = spec.submodule_search_locations or []
            # Is this finder PEP 420 compliant?
            elif hasattr(finder, 'find_loader'):
                _, portions = finder.find_loader(final_name)

for portion in portions:
                # XXX This may still add duplicate entries to path on
                # case-insensitive filesystems
                if portion not in path:
                    path.append(portion)

# XXX Is this the right thing for subpackages like zope.app?
        # It looks for a file named "zope.app.pkg"
        pkgfile = os.path.join(dir, sname_pkg)
        if os.path.isfile(pkgfile):
            try:
                f = open(pkgfile)
            except OSError as msg:
                sys.stderr.write("Can't open %s: %s\n" %
                                 (pkgfile, msg))
            else:
                with f:
                    for line in f:
                        line = line.rstrip('\n')
                        if not line or line.startswith('#'):
                            continue
                        path.append(line) # Don't check for existence!

return path

def get_data(package, resource):
    """Get a resource from a package.

This is a wrapper round the PEP 302 loader get_data API. The package
    argument should be the name of a package, in standard module format
    (foo.bar). The resource argument should be in the form of a relative
    filename, using '/' as the path separator. The parent directory name '..'
    is not allowed, and nor is a rooted name (starting with a '/').

The function returns a binary string, which is the contents of the
    specified resource.

For packages located in the filesystem, which have already been imported,
    this is the rough equivalent of

d = os.path.dirname(sys.modules[package].__file__)
        data = open(os.path.join(d, resource), 'rb').read()

If the package cannot be located or loaded, or it uses a PEP 302 loader
    which does not support get_data(), then None is returned.
    """

spec = importlib.util.find_spec(package)
    if spec is None:
        return None
    loader = spec.loader
    if loader is None or not hasattr(loader, 'get_data'):
        return None
    # XXX needs test
    mod = (sys.modules.get(package) or
           importlib._bootstrap._load(spec))
    if mod is None or not hasattr(mod, '__file__'):
        return None

# Modify the resource name to be compatible with the loader.get_data
    # signature - an os.path format "filename" starting with the dirname of
    # the package's __file__
    parts = resource.split('/')
    parts.insert(0, os.path.dirname(mod.__file__))
    resource_name = os.path.join(*parts)
    return loader.get_data(resource_name)

cmd: