FM / python3.9

/usr/lib64/python3.9

Name	Size	Mode	Actions
asyncio/	-	0755	rm
collections/	-	0755	rm
concurrent/	-	0755	rm
config-3.9-x86_64-linux-gnu/	-	0755	rm
ctypes/	-	0755	rm
curses/	-	0755	rm
dbm/	-	0755	rm
distutils/	-	0755	rm
email/	-	0755	rm
encodings/	-	0755	rm
ensurepip/	-	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
site-packages/	-	0755	rm
sqlite3/	-	0755	rm
unittest/	-	0755	rm
urllib/	-	0755	rm
venv/	-	0755	rm
wsgiref/	-	0755	rm
xml/	-	0755	rm
xmlrpc/	-	0755	rm
zoneinfo/	-	0755	rm
__pycache__/	-	0755	rm
abc.py	4920	0644	edit dl rm
aifc.py	32605	0644	edit dl rm
antigravity.py	500	0644	edit dl rm
argparse.py	98119	0644	edit dl rm
ast.py	56256	0644	edit dl rm
asynchat.py	11321	0644	edit dl rm
asyncore.py	20102	0644	edit dl rm
base64.py	19859	0755	edit dl rm
bdb.py	31389	0644	edit dl rm
binhex.py	14784	0644	edit dl rm
bisect.py	2350	0644	edit dl rm
bz2.py	12447	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	36673	0644	edit dl rm
codeop.py	6326	0644	edit dl rm
colorsys.py	4064	0644	edit dl rm
compileall.py	20105	0644	edit dl rm
configparser.py	54584	0644	edit dl rm
contextlib.py	24624	0644	edit dl rm
contextvars.py	129	0644	edit dl rm
copy.py	8650	0644	edit dl rm
copyreg.py	7274	0644	edit dl rm
cProfile.py	6345	0755	edit dl rm
crypt.py	3819	0644	edit dl rm
csv.py	16144	0644	edit dl rm
dataclasses.py	49586	0644	edit dl rm
datetime.py	89177	0644	edit dl rm
decimal.py	320	0644	edit dl rm
difflib.py	83307	0644	edit dl rm
dis.py	20570	0644	edit dl rm
doctest.py	104568	0644	edit dl rm
enum.py	39440	0644	edit dl rm
filecmp.py	10024	0644	edit dl rm
fileinput.py	14791	0644	edit dl rm
fnmatch.py	6004	0644	edit dl rm
formatter.py	15143	0644	edit dl rm
fractions.py	24323	0644	edit dl rm
ftplib.py	35496	0644	edit dl rm
functools.py	38881	0644	edit dl rm
genericpath.py	5246	0644	edit dl rm
getopt.py	7489	0644	edit dl rm
getpass.py	5990	0644	edit dl rm
gettext.py	27266	0644	edit dl rm
glob.py	5823	0644	edit dl rm
graphlib.py	9573	0644	edit dl rm
gzip.py	21772	0644	edit dl rm
hashlib.py	8069	0644	edit dl rm
heapq.py	22877	0644	edit dl rm
hmac.py	8043	0644	edit dl rm
imaplib.py	55256	0644	edit dl rm
imghdr.py	3808	0644	edit dl rm
imp.py	10536	0644	edit dl rm
inspect.py	118235	0644	edit dl rm
io.py	3541	0644	edit dl rm
ipaddress.py	80924	0644	edit dl rm
keyword.py	1047	0644	edit dl rm
LICENSE.txt	13937	0644	edit dl rm
linecache.py	5461	0644	edit dl rm
locale.py	78271	0644	edit dl rm
lzma.py	13231	0644	edit dl rm
mailbox.py	78794	0644	edit dl rm
mailcap.py	9116	0644	edit dl rm
mimetypes.py	21564	0644	edit dl rm
modulefinder.py	24401	0644	edit dl rm
netrc.py	5566	0644	edit dl rm
nntplib.py	41023	0644	edit dl rm
ntpath.py	26460	0644	edit dl rm
nturl2path.py	2887	0644	edit dl rm
numbers.py	10338	0644	edit dl rm
opcode.py	5660	0644	edit dl rm
operator.py	10751	0644	edit dl rm
optparse.py	60369	0644	edit dl rm
os.py	39065	0644	edit dl rm
pathlib.py	51134	0644	edit dl rm
pdb.py	63237	0755	edit dl rm
pickle.py	64920	0644	edit dl rm
pickletools.py	93486	0644	edit dl rm
pipes.py	8916	0644	edit dl rm
pkgutil.py	24276	0644	edit dl rm
platform.py	40601	0755	edit dl rm
plistlib.py	28248	0644	edit dl rm
poplib.py	15198	0644	edit dl rm
posixpath.py	16146	0644	edit dl rm
pprint.py	22527	0644	edit dl rm
profile.py	22881	0755	edit dl rm
pstats.py	29326	0644	edit dl rm
pty.py	4807	0644	edit dl rm
pyclbr.py	15255	0644	edit dl rm
pydoc.py	109599	0755	edit dl rm
py_compile.py	8203	0644	edit dl rm
queue.py	11496	0644	edit dl rm
quopri.py	7266	0755	edit dl rm
random.py	31484	0644	edit dl rm
re.py	15861	0644	edit dl rm
reprlib.py	5267	0644	edit dl rm
rlcompleter.py	7648	0644	edit dl rm
runpy.py	13084	0644	edit dl rm
sched.py	6442	0644	edit dl rm
secrets.py	2036	0644	edit dl rm
selectors.py	19536	0644	edit dl rm
shelve.py	8527	0644	edit dl rm
shlex.py	13501	0644	edit dl rm
shutil.py	53030	0644	edit dl rm
signal.py	2438	0644	edit dl rm
site.py	22085	0644	edit dl rm
smtpd.py	34821	0755	edit dl rm
smtplib.py	45405	0755	edit dl rm
sndhdr.py	7099	0644	edit dl rm
socket.py	36915	0644	edit dl rm
socketserver.py	27296	0644	edit dl rm
sre_compile.py	27973	0644	edit dl rm
sre_constants.py	7177	0644	edit dl rm
sre_parse.py	40779	0644	edit dl rm
ssl.py	52622	0644	edit dl rm
stat.py	5485	0644	edit dl rm
statistics.py	38067	0644	edit dl rm
string.py	10566	0644	edit dl rm
stringprep.py	12917	0644	edit dl rm
struct.py	257	0644	edit dl rm
subprocess.py	83564	0644	edit dl rm
sunau.py	18158	0644	edit dl rm
symbol.py	2281	0644	edit dl rm
symtable.py	7905	0644	edit dl rm
sysconfig.py	25557	0644	edit dl rm
tabnanny.py	11406	0755	edit dl rm
tarfile.py	112939	0755	edit dl rm
telnetlib.py	23254	0644	edit dl rm
tempfile.py	27963	0644	edit dl rm
textwrap.py	19407	0644	edit dl rm
this.py	1003	0644	edit dl rm
threading.py	54176	0644	edit dl rm
timeit.py	13480	0755	edit dl rm
token.py	2368	0644	edit dl rm
tokenize.py	25883	0644	edit dl rm
trace.py	29207	0755	edit dl rm
traceback.py	24660	0644	edit dl rm
tracemalloc.py	18047	0644	edit dl rm
tty.py	879	0644	edit dl rm
types.py	9785	0644	edit dl rm
typing.py	77044	0644	edit dl rm
uu.py	7277	0644	edit dl rm
uuid.py	27324	0644	edit dl rm
warnings.py	19688	0644	edit dl rm
wave.py	18004	0644	edit dl rm
weakref.py	21560	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	88899	0644	edit dl rm
zipimport.py	30765	0644	edit dl rm
_aix_support.py	3389	0644	edit dl rm
_bootlocale.py	1801	0644	edit dl rm
_bootsubprocess.py	2675	0644	edit dl rm
_collections_abc.py	29374	0644	edit dl rm
_compat_pickle.py	8749	0644	edit dl rm
_compression.py	5340	0644	edit dl rm
_markupbase.py	14623	0644	edit dl rm
_osx_support.py	21773	0644	edit dl rm
_pydecimal.py	228666	0644	edit dl rm
_pyio.py	93316	0644	edit dl rm
_py_abc.py	6189	0644	edit dl rm
_sitebuiltins.py	3115	0644	edit dl rm
_strptime.py	25277	0644	edit dl rm
_sysconfigdata__linux_x86_64-linux-gnu.py	41236	0644	edit dl rm
_threading_local.py	7220	0644	edit dl rm
_weakrefset.py	5923	0644	edit dl rm
__future__.py	5147	0644	edit dl rm
__phello__.foo.py	64	0644	edit dl rm

Edit: /usr/lib64/python3.9/zipimport.py (30765B)

"""zipimport provides support for importing Python modules from Zip archives.

This module exports three objects:
- zipimporter: a class; its constructor takes a path to a Zip archive.
- ZipImportError: exception raised by zipimporter objects. It's a
  subclass of ImportError, so it can be caught as ImportError, too.
- _zip_directory_cache: a dict, mapping archive paths to zip directory
  info dicts, as used in zipimporter._files.

It is usually not needed to use the zipimport module explicitly; it is
used by the builtin import mechanism for sys.path items that are paths
to Zip archives.
"""

#from importlib import _bootstrap_external
#from importlib import _bootstrap  # for _verbose_message
import _frozen_importlib_external as _bootstrap_external
from _frozen_importlib_external import _unpack_uint16, _unpack_uint32
import _frozen_importlib as _bootstrap  # for _verbose_message
import _imp  # for check_hash_based_pycs
import _io  # for open
import marshal  # for loads
import sys  # for modules
import time  # for mktime

__all__ = ['ZipImportError', 'zipimporter']

path_sep = _bootstrap_external.path_sep
alt_path_sep = _bootstrap_external.path_separators[1:]

class ZipImportError(ImportError):
    pass

# _read_directory() cache
_zip_directory_cache = {}

_module_type = type(sys)

END_CENTRAL_DIR_SIZE = 22
STRING_END_ARCHIVE = b'PK\x05\x06'
MAX_COMMENT_LEN = (1 << 16) - 1

class zipimporter:
    """zipimporter(archivepath) -> zipimporter object

Create a new zipimporter instance. 'archivepath' must be a path to
    a zipfile, or to a specific path inside a zipfile. For example, it can be
    '/tmp/myimport.zip', or '/tmp/myimport.zip/mydirectory', if mydirectory is a
    valid directory inside the archive.

'ZipImportError is raised if 'archivepath' doesn't point to a valid Zip
    archive.

The 'archive' attribute of zipimporter objects contains the name of the
    zipfile targeted.
    """

# Split the "subdirectory" from the Zip archive path, lookup a matching
    # entry in sys.path_importer_cache, fetch the file directory from there
    # if found, or else read it from the archive.
    def __init__(self, path):
        if not isinstance(path, str):
            import os
            path = os.fsdecode(path)
        if not path:
            raise ZipImportError('archive path is empty', path=path)
        if alt_path_sep:
            path = path.replace(alt_path_sep, path_sep)

prefix = []
        while True:
            try:
                st = _bootstrap_external._path_stat(path)
            except (OSError, ValueError):
                # On Windows a ValueError is raised for too long paths.
                # Back up one path element.
                dirname, basename = _bootstrap_external._path_split(path)
                if dirname == path:
                    raise ZipImportError('not a Zip file', path=path)
                path = dirname
                prefix.append(basename)
            else:
                # it exists
                if (st.st_mode & 0o170000) != 0o100000:  # stat.S_ISREG
                    # it's a not file
                    raise ZipImportError('not a Zip file', path=path)
                break

try:
            files = _zip_directory_cache[path]
        except KeyError:
            files = _read_directory(path)
            _zip_directory_cache[path] = files
        self._files = files
        self.archive = path
        # a prefix directory following the ZIP file path.
        self.prefix = _bootstrap_external._path_join(*prefix[::-1])
        if self.prefix:
            self.prefix += path_sep

# Check whether we can satisfy the import of the module named by
    # 'fullname', or whether it could be a portion of a namespace
    # package. Return self if we can load it, a string containing the
    # full path if it's a possible namespace portion, None if we
    # can't load it.
    def find_loader(self, fullname, path=None):
        """find_loader(fullname, path=None) -> self, str or None.

Search for a module specified by 'fullname'. 'fullname' must be the
        fully qualified (dotted) module name. It returns the zipimporter
        instance itself if the module was found, a string containing the
        full path name if it's possibly a portion of a namespace package,
        or None otherwise. The optional 'path' argument is ignored -- it's
        there for compatibility with the importer protocol.
        """
        mi = _get_module_info(self, fullname)
        if mi is not None:
            # This is a module or package.
            return self, []

# Not a module or regular package. See if this is a directory, and
        # therefore possibly a portion of a namespace package.

# We're only interested in the last path component of fullname
        # earlier components are recorded in self.prefix.
        modpath = _get_module_path(self, fullname)
        if _is_dir(self, modpath):
            # This is possibly a portion of a namespace
            # package. Return the string representing its path,
            # without a trailing separator.
            return None, [f'{self.archive}{path_sep}{modpath}']

return None, []

# Check whether we can satisfy the import of the module named by
    # 'fullname'. Return self if we can, None if we can't.
    def find_module(self, fullname, path=None):
        """find_module(fullname, path=None) -> self or None.

Search for a module specified by 'fullname'. 'fullname' must be the
        fully qualified (dotted) module name. It returns the zipimporter
        instance itself if the module was found, or None if it wasn't.
        The optional 'path' argument is ignored -- it's there for compatibility
        with the importer protocol.
        """
        return self.find_loader(fullname, path)[0]

def get_code(self, fullname):
        """get_code(fullname) -> code object.

Return the code object for the specified module. Raise ZipImportError
        if the module couldn't be found.
        """
        code, ispackage, modpath = _get_module_code(self, fullname)
        return code

def get_data(self, pathname):
        """get_data(pathname) -> string with file data.

Return the data associated with 'pathname'. Raise OSError if
        the file wasn't found.
        """
        if alt_path_sep:
            pathname = pathname.replace(alt_path_sep, path_sep)

key = pathname
        if pathname.startswith(self.archive + path_sep):
            key = pathname[len(self.archive + path_sep):]

try:
            toc_entry = self._files[key]
        except KeyError:
            raise OSError(0, '', key)
        return _get_data(self.archive, toc_entry)

# Return a string matching __file__ for the named module
    def get_filename(self, fullname):
        """get_filename(fullname) -> filename string.

Return the filename for the specified module.
        """
        # Deciding the filename requires working out where the code
        # would come from if the module was actually loaded
        code, ispackage, modpath = _get_module_code(self, fullname)
        return modpath

def get_source(self, fullname):
        """get_source(fullname) -> source string.

Return the source code for the specified module. Raise ZipImportError
        if the module couldn't be found, return None if the archive does
        contain the module, but has no source for it.
        """
        mi = _get_module_info(self, fullname)
        if mi is None:
            raise ZipImportError(f"can't find module {fullname!r}", name=fullname)

path = _get_module_path(self, fullname)
        if mi:
            fullpath = _bootstrap_external._path_join(path, '__init__.py')
        else:
            fullpath = f'{path}.py'

try:
            toc_entry = self._files[fullpath]
        except KeyError:
            # we have the module, but no source
            return None
        return _get_data(self.archive, toc_entry).decode()

# Return a bool signifying whether the module is a package or not.
    def is_package(self, fullname):
        """is_package(fullname) -> bool.

Return True if the module specified by fullname is a package.
        Raise ZipImportError if the module couldn't be found.
        """
        mi = _get_module_info(self, fullname)
        if mi is None:
            raise ZipImportError(f"can't find module {fullname!r}", name=fullname)
        return mi

# Load and return the module named by 'fullname'.
    def load_module(self, fullname):
        """load_module(fullname) -> module.

Load the module specified by 'fullname'. 'fullname' must be the
        fully qualified (dotted) module name. It returns the imported
        module, or raises ZipImportError if it wasn't found.
        """
        code, ispackage, modpath = _get_module_code(self, fullname)
        mod = sys.modules.get(fullname)
        if mod is None or not isinstance(mod, _module_type):
            mod = _module_type(fullname)
            sys.modules[fullname] = mod
        mod.__loader__ = self

try:
            if ispackage:
                # add __path__ to the module *before* the code gets
                # executed
                path = _get_module_path(self, fullname)
                fullpath = _bootstrap_external._path_join(self.archive, path)
                mod.__path__ = [fullpath]

if not hasattr(mod, '__builtins__'):
                mod.__builtins__ = __builtins__
            _bootstrap_external._fix_up_module(mod.__dict__, fullname, modpath)
            exec(code, mod.__dict__)
        except:
            del sys.modules[fullname]
            raise

try:
            mod = sys.modules[fullname]
        except KeyError:
            raise ImportError(f'Loaded module {fullname!r} not found in sys.modules')
        _bootstrap._verbose_message('import {} # loaded from Zip {}', fullname, modpath)
        return mod

def get_resource_reader(self, fullname):
        """Return the ResourceReader for a package in a zip file.

If 'fullname' is a package within the zip file, return the
        'ResourceReader' object for the package.  Otherwise return None.
        """
        try:
            if not self.is_package(fullname):
                return None
        except ZipImportError:
            return None
        if not _ZipImportResourceReader._registered:
            from importlib.abc import ResourceReader
            ResourceReader.register(_ZipImportResourceReader)
            _ZipImportResourceReader._registered = True
        return _ZipImportResourceReader(self, fullname)

def __repr__(self):
        return f'<zipimporter object "{self.archive}{path_sep}{self.prefix}">'

# _zip_searchorder defines how we search for a module in the Zip
# archive: we first search for a package __init__, then for
# non-package .pyc, and .py entries. The .pyc entries
# are swapped by initzipimport() if we run in optimized mode. Also,
# '/' is replaced by path_sep there.
_zip_searchorder = (
    (path_sep + '__init__.pyc', True, True),
    (path_sep + '__init__.py', False, True),
    ('.pyc', True, False),
    ('.py', False, False),
)

# Given a module name, return the potential file path in the
# archive (without extension).
def _get_module_path(self, fullname):
    return self.prefix + fullname.rpartition('.')[2]

# Does this path represent a directory?
def _is_dir(self, path):
    # See if this is a "directory". If so, it's eligible to be part
    # of a namespace package. We test by seeing if the name, with an
    # appended path separator, exists.
    dirpath = path + path_sep
    # If dirpath is present in self._files, we have a directory.
    return dirpath in self._files

# Return some information about a module.
def _get_module_info(self, fullname):
    path = _get_module_path(self, fullname)
    for suffix, isbytecode, ispackage in _zip_searchorder:
        fullpath = path + suffix
        if fullpath in self._files:
            return ispackage
    return None

# implementation

# _read_directory(archive) -> files dict (new reference)
#
# Given a path to a Zip archive, build a dict, mapping file names
# (local to the archive, using SEP as a separator) to toc entries.
#
# A toc_entry is a tuple:
#
# (__file__,        # value to use for __file__, available for all files,
#                   # encoded to the filesystem encoding
#  compress,        # compression kind; 0 for uncompressed
#  data_size,       # size of compressed data on disk
#  file_size,       # size of decompressed data
#  file_offset,     # offset of file header from start of archive
#  time,            # mod time of file (in dos format)
#  date,            # mod data of file (in dos format)
#  crc,             # crc checksum of the data
# )
#
# Directories can be recognized by the trailing path_sep in the name,
# data_size and file_offset are 0.
def _read_directory(archive):
    try:
        fp = _io.open_code(archive)
    except OSError:
        raise ZipImportError(f"can't open Zip file: {archive!r}", path=archive)

with fp:
        try:
            fp.seek(-END_CENTRAL_DIR_SIZE, 2)
            header_position = fp.tell()
            buffer = fp.read(END_CENTRAL_DIR_SIZE)
        except OSError:
            raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
        if len(buffer) != END_CENTRAL_DIR_SIZE:
            raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
        if buffer[:4] != STRING_END_ARCHIVE:
            # Bad: End of Central Dir signature
            # Check if there's a comment.
            try:
                fp.seek(0, 2)
                file_size = fp.tell()
            except OSError:
                raise ZipImportError(f"can't read Zip file: {archive!r}",
                                     path=archive)
            max_comment_start = max(file_size - MAX_COMMENT_LEN -
                                    END_CENTRAL_DIR_SIZE, 0)
            try:
                fp.seek(max_comment_start)
                data = fp.read()
            except OSError:
                raise ZipImportError(f"can't read Zip file: {archive!r}",
                                     path=archive)
            pos = data.rfind(STRING_END_ARCHIVE)
            if pos < 0:
                raise ZipImportError(f'not a Zip file: {archive!r}',
                                     path=archive)
            buffer = data[pos:pos+END_CENTRAL_DIR_SIZE]
            if len(buffer) != END_CENTRAL_DIR_SIZE:
                raise ZipImportError(f"corrupt Zip file: {archive!r}",
                                     path=archive)
            header_position = file_size - len(data) + pos

header_size = _unpack_uint32(buffer[12:16])
        header_offset = _unpack_uint32(buffer[16:20])
        if header_position < header_size:
            raise ZipImportError(f'bad central directory size: {archive!r}', path=archive)
        if header_position < header_offset:
            raise ZipImportError(f'bad central directory offset: {archive!r}', path=archive)
        header_position -= header_size
        arc_offset = header_position - header_offset
        if arc_offset < 0:
            raise ZipImportError(f'bad central directory size or offset: {archive!r}', path=archive)

files = {}
        # Start of Central Directory
        count = 0
        try:
            fp.seek(header_position)
        except OSError:
            raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
        while True:
            buffer = fp.read(46)
            if len(buffer) < 4:
                raise EOFError('EOF read where not expected')
            # Start of file header
            if buffer[:4] != b'PK\x01\x02':
                break                                # Bad: Central Dir File Header
            if len(buffer) != 46:
                raise EOFError('EOF read where not expected')
            flags = _unpack_uint16(buffer[8:10])
            compress = _unpack_uint16(buffer[10:12])
            time = _unpack_uint16(buffer[12:14])
            date = _unpack_uint16(buffer[14:16])
            crc = _unpack_uint32(buffer[16:20])
            data_size = _unpack_uint32(buffer[20:24])
            file_size = _unpack_uint32(buffer[24:28])
            name_size = _unpack_uint16(buffer[28:30])
            extra_size = _unpack_uint16(buffer[30:32])
            comment_size = _unpack_uint16(buffer[32:34])
            file_offset = _unpack_uint32(buffer[42:46])
            header_size = name_size + extra_size + comment_size
            if file_offset > header_offset:
                raise ZipImportError(f'bad local header offset: {archive!r}', path=archive)
            file_offset += arc_offset

try:
                name = fp.read(name_size)
            except OSError:
                raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
            if len(name) != name_size:
                raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
            # On Windows, calling fseek to skip over the fields we don't use is
            # slower than reading the data because fseek flushes stdio's
            # internal buffers.    See issue #8745.
            try:
                if len(fp.read(header_size - name_size)) != header_size - name_size:
                    raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
            except OSError:
                raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)

if flags & 0x800:
                # UTF-8 file names extension
                name = name.decode()
            else:
                # Historical ZIP filename encoding
                try:
                    name = name.decode('ascii')
                except UnicodeDecodeError:
                    name = name.decode('latin1').translate(cp437_table)

name = name.replace('/', path_sep)
            path = _bootstrap_external._path_join(archive, name)
            t = (path, compress, data_size, file_size, file_offset, time, date, crc)
            files[name] = t
            count += 1
    _bootstrap._verbose_message('zipimport: found {} names in {!r}', count, archive)
    return files

# During bootstrap, we may need to load the encodings
# package from a ZIP file. But the cp437 encoding is implemented
# in Python in the encodings package.
#
# Break out of this dependency by using the translation table for
# the cp437 encoding.
cp437_table = (
    # ASCII part, 8 rows x 16 chars
    '\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
    '\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f'
    ' !"#$%&\'()*+,-./'
    '0123456789:;<=>?'
    '@ABCDEFGHIJKLMNO'
    'PQRSTUVWXYZ[\\]^_'
    '`abcdefghijklmno'
    'pqrstuvwxyz{|}~\x7f'
    # non-ASCII part, 16 rows x 8 chars
    '\xc7\xfc\xe9\xe2\xe4\xe0\xe5\xe7'
    '\xea\xeb\xe8\xef\xee\xec\xc4\xc5'
    '\xc9\xe6\xc6\xf4\xf6\xf2\xfb\xf9'
    '\xff\xd6\xdc\xa2\xa3\xa5\u20a7\u0192'
    '\xe1\xed\xf3\xfa\xf1\xd1\xaa\xba'
    '\xbf\u2310\xac\xbd\xbc\xa1\xab\xbb'
    '\u2591\u2592\u2593\u2502\u2524\u2561\u2562\u2556'
    '\u2555\u2563\u2551\u2557\u255d\u255c\u255b\u2510'
    '\u2514\u2534\u252c\u251c\u2500\u253c\u255e\u255f'
    '\u255a\u2554\u2569\u2566\u2560\u2550\u256c\u2567'
    '\u2568\u2564\u2565\u2559\u2558\u2552\u2553\u256b'
    '\u256a\u2518\u250c\u2588\u2584\u258c\u2590\u2580'
    '\u03b1\xdf\u0393\u03c0\u03a3\u03c3\xb5\u03c4'
    '\u03a6\u0398\u03a9\u03b4\u221e\u03c6\u03b5\u2229'
    '\u2261\xb1\u2265\u2264\u2320\u2321\xf7\u2248'
    '\xb0\u2219\xb7\u221a\u207f\xb2\u25a0\xa0'
)

_importing_zlib = False

# Return the zlib.decompress function object, or NULL if zlib couldn't
# be imported. The function is cached when found, so subsequent calls
# don't import zlib again.
def _get_decompress_func():
    global _importing_zlib
    if _importing_zlib:
        # Someone has a zlib.py[co] in their Zip file
        # let's avoid a stack overflow.
        _bootstrap._verbose_message('zipimport: zlib UNAVAILABLE')
        raise ZipImportError("can't decompress data; zlib not available")

_importing_zlib = True
    try:
        from zlib import decompress
    except Exception:
        _bootstrap._verbose_message('zipimport: zlib UNAVAILABLE')
        raise ZipImportError("can't decompress data; zlib not available")
    finally:
        _importing_zlib = False

_bootstrap._verbose_message('zipimport: zlib available')
    return decompress

# Given a path to a Zip file and a toc_entry, return the (uncompressed) data.
def _get_data(archive, toc_entry):
    datapath, compress, data_size, file_size, file_offset, time, date, crc = toc_entry
    if data_size < 0:
        raise ZipImportError('negative data size')

with _io.open_code(archive) as fp:
        # Check to make sure the local file header is correct
        try:
            fp.seek(file_offset)
        except OSError:
            raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
        buffer = fp.read(30)
        if len(buffer) != 30:
            raise EOFError('EOF read where not expected')

if buffer[:4] != b'PK\x03\x04':
            # Bad: Local File Header
            raise ZipImportError(f'bad local file header: {archive!r}', path=archive)

name_size = _unpack_uint16(buffer[26:28])
        extra_size = _unpack_uint16(buffer[28:30])
        header_size = 30 + name_size + extra_size
        file_offset += header_size  # Start of file data
        try:
            fp.seek(file_offset)
        except OSError:
            raise ZipImportError(f"can't read Zip file: {archive!r}", path=archive)
        raw_data = fp.read(data_size)
        if len(raw_data) != data_size:
            raise OSError("zipimport: can't read data")

if compress == 0:
        # data is not compressed
        return raw_data

# Decompress with zlib
    try:
        decompress = _get_decompress_func()
    except Exception:
        raise ZipImportError("can't decompress data; zlib not available")
    return decompress(raw_data, -15)

# Lenient date/time comparison function. The precision of the mtime
# in the archive is lower than the mtime stored in a .pyc: we
# must allow a difference of at most one second.
def _eq_mtime(t1, t2):
    # dostime only stores even seconds, so be lenient
    return abs(t1 - t2) <= 1

# Given the contents of a .py[co] file, unmarshal the data
# and return the code object. Return None if it the magic word doesn't
# match, or if the recorded .py[co] metadata does not match the source,
# (we do this instead of raising an exception as we fall back
# to .py if available and we don't want to mask other errors).
def _unmarshal_code(self, pathname, fullpath, fullname, data):
    exc_details = {
        'name': fullname,
        'path': fullpath,
    }

try:
        flags = _bootstrap_external._classify_pyc(data, fullname, exc_details)
    except ImportError:
        return None

hash_based = flags & 0b1 != 0
    if hash_based:
        check_source = flags & 0b10 != 0
        if (_imp.check_hash_based_pycs != 'never' and
                (check_source or _imp.check_hash_based_pycs == 'always')):
            source_bytes = _get_pyc_source(self, fullpath)
            if source_bytes is not None:
                source_hash = _imp.source_hash(
                    _bootstrap_external._RAW_MAGIC_NUMBER,
                    source_bytes,
                )

try:
                    _bootstrap_external._validate_hash_pyc(
                        data, source_hash, fullname, exc_details)
                except ImportError:
                    return None
    else:
        source_mtime, source_size = \
            _get_mtime_and_size_of_source(self, fullpath)

if source_mtime:
            # We don't use _bootstrap_external._validate_timestamp_pyc
            # to allow for a more lenient timestamp check.
            if (not _eq_mtime(_unpack_uint32(data[8:12]), source_mtime) or
                    _unpack_uint32(data[12:16]) != source_size):
                _bootstrap._verbose_message(
                    f'bytecode is stale for {fullname!r}')
                return None

code = marshal.loads(data[16:])
    if not isinstance(code, _code_type):
        raise TypeError(f'compiled module {pathname!r} is not a code object')
    return code

_code_type = type(_unmarshal_code.__code__)

# Replace any occurrences of '\r\n?' in the input string with '\n'.
# This converts DOS and Mac line endings to Unix line endings.
def _normalize_line_endings(source):
    source = source.replace(b'\r\n', b'\n')
    source = source.replace(b'\r', b'\n')
    return source

# Given a string buffer containing Python source code, compile it
# and return a code object.
def _compile_source(pathname, source):
    source = _normalize_line_endings(source)
    return compile(source, pathname, 'exec', dont_inherit=True)

# Convert the date/time values found in the Zip archive to a value
# that's compatible with the time stamp stored in .pyc files.
def _parse_dostime(d, t):
    return time.mktime((
        (d >> 9) + 1980,    # bits 9..15: year
        (d >> 5) & 0xF,     # bits 5..8: month
        d & 0x1F,           # bits 0..4: day
        t >> 11,            # bits 11..15: hours
        (t >> 5) & 0x3F,    # bits 8..10: minutes
        (t & 0x1F) * 2,     # bits 0..7: seconds / 2
        -1, -1, -1))

# Given a path to a .pyc file in the archive, return the
# modification time of the matching .py file and its size,
# or (0, 0) if no source is available.
def _get_mtime_and_size_of_source(self, path):
    try:
        # strip 'c' or 'o' from *.py[co]
        assert path[-1:] in ('c', 'o')
        path = path[:-1]
        toc_entry = self._files[path]
        # fetch the time stamp of the .py file for comparison
        # with an embedded pyc time stamp
        time = toc_entry[5]
        date = toc_entry[6]
        uncompressed_size = toc_entry[3]
        return _parse_dostime(date, time), uncompressed_size
    except (KeyError, IndexError, TypeError):
        return 0, 0

# Given a path to a .pyc file in the archive, return the
# contents of the matching .py file, or None if no source
# is available.
def _get_pyc_source(self, path):
    # strip 'c' or 'o' from *.py[co]
    assert path[-1:] in ('c', 'o')
    path = path[:-1]

try:
        toc_entry = self._files[path]
    except KeyError:
        return None
    else:
        return _get_data(self.archive, toc_entry)

# Get the code object associated with the module specified by
# 'fullname'.
def _get_module_code(self, fullname):
    path = _get_module_path(self, fullname)
    for suffix, isbytecode, ispackage in _zip_searchorder:
        fullpath = path + suffix
        _bootstrap._verbose_message('trying {}{}{}', self.archive, path_sep, fullpath, verbosity=2)
        try:
            toc_entry = self._files[fullpath]
        except KeyError:
            pass
        else:
            modpath = toc_entry[0]
            data = _get_data(self.archive, toc_entry)
            if isbytecode:
                code = _unmarshal_code(self, modpath, fullpath, fullname, data)
            else:
                code = _compile_source(modpath, data)
            if code is None:
                # bad magic number or non-matching mtime
                # in byte code, try next
                continue
            modpath = toc_entry[0]
            return code, ispackage, modpath
    else:
        raise ZipImportError(f"can't find module {fullname!r}", name=fullname)

class _ZipImportResourceReader:
    """Private class used to support ZipImport.get_resource_reader().

This class is allowed to reference all the innards and private parts of
    the zipimporter.
    """
    _registered = False

def __init__(self, zipimporter, fullname):
        self.zipimporter = zipimporter
        self.fullname = fullname

def open_resource(self, resource):
        fullname_as_path = self.fullname.replace('.', '/')
        path = f'{fullname_as_path}/{resource}'
        from io import BytesIO
        try:
            return BytesIO(self.zipimporter.get_data(path))
        except OSError:
            raise FileNotFoundError(path)

def resource_path(self, resource):
        # All resources are in the zip file, so there is no path to the file.
        # Raising FileNotFoundError tells the higher level API to extract the
        # binary data and create a temporary file.
        raise FileNotFoundError

def is_resource(self, name):
        # Maybe we could do better, but if we can get the data, it's a
        # resource.  Otherwise it isn't.
        fullname_as_path = self.fullname.replace('.', '/')
        path = f'{fullname_as_path}/{name}'
        try:
            self.zipimporter.get_data(path)
        except OSError:
            return False
        return True

def contents(self):
        # This is a bit convoluted, because fullname will be a module path,
        # but _files is a list of file names relative to the top of the
        # archive's namespace.  We want to compare file paths to find all the
        # names of things inside the module represented by fullname.  So we
        # turn the module path of fullname into a file path relative to the
        # top of the archive, and then we iterate through _files looking for
        # names inside that "directory".
        from pathlib import Path
        fullname_path = Path(self.zipimporter.get_filename(self.fullname))
        relative_path = fullname_path.relative_to(self.zipimporter.archive)
        # Don't forget that fullname names a package, so its path will include
        # __init__.py, which we want to ignore.
        assert relative_path.name == '__init__.py'
        package_path = relative_path.parent
        subdirs_seen = set()
        for filename in self.zipimporter._files:
            try:
                relative = Path(filename).relative_to(package_path)
            except ValueError:
                continue
            # If the path of the file (which is relative to the top of the zip
            # namespace), relative to the package given when the resource
            # reader was created, has a parent, then it's a name in a
            # subdirectory and thus we skip it.
            parent_name = relative.parent.name
            if len(parent_name) == 0:
                yield relative.name
            elif parent_name not in subdirs_seen:
                subdirs_seen.add(parent_name)
                yield parent_name

cmd: