FM / python3.3

/opt/alt/python33/lib64/python3.3

Name	Size	Mode	Actions
collections/	-	0755	rm
concurrent/	-	0755	rm
config-3.3m/	-	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
idlelib/	-	0755	rm
importlib/	-	0755	rm
json/	-	0755	rm
lib-dynload/	-	0755	rm
lib2to3/	-	0755	rm
logging/	-	0755	rm
multiprocessing/	-	0755	rm
plat-linux/	-	0755	rm
pydoc_data/	-	0755	rm
site-packages/	-	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	8057	0644	edit dl rm
aifc.py	31054	0644	edit dl rm
antigravity.py	475	0644	edit dl rm
argparse.py	89069	0644	edit dl rm
ast.py	12142	0644	edit dl rm
asynchat.py	11588	0644	edit dl rm
asyncore.py	20753	0644	edit dl rm
base64.py	13986	0755	edit dl rm
bdb.py	21894	0644	edit dl rm
binhex.py	13708	0644	edit dl rm
bisect.py	2595	0644	edit dl rm
bz2.py	18473	0644	edit dl rm
calendar.py	22940	0644	edit dl rm
cgi.py	35554	0755	edit dl rm
cgitb.py	12041	0644	edit dl rm
chunk.py	5377	0644	edit dl rm
cmd.py	14860	0644	edit dl rm
code.py	10030	0644	edit dl rm
codecs.py	35956	0644	edit dl rm
codeop.py	5994	0644	edit dl rm
colorsys.py	3691	0644	edit dl rm
compileall.py	9743	0644	edit dl rm
configparser.py	49437	0644	edit dl rm
contextlib.py	9125	0644	edit dl rm
copy.py	8991	0644	edit dl rm
copyreg.py	6611	0644	edit dl rm
cProfile.py	6361	0755	edit dl rm
crypt.py	1879	0644	edit dl rm
csv.py	16185	0644	edit dl rm
datetime.py	74954	0644	edit dl rm
decimal.py	228558	0644	edit dl rm
difflib.py	82519	0644	edit dl rm
dis.py	10134	0644	edit dl rm
doctest.py	102933	0644	edit dl rm
dummy_threading.py	2815	0644	edit dl rm
filecmp.py	9597	0644	edit dl rm
fileinput.py	14256	0644	edit dl rm
fnmatch.py	3163	0644	edit dl rm
formatter.py	14930	0644	edit dl rm
fractions.py	23033	0644	edit dl rm
ftplib.py	40253	0644	edit dl rm
functools.py	13596	0644	edit dl rm
genericpath.py	3093	0644	edit dl rm
getopt.py	7488	0644	edit dl rm
getpass.py	5793	0644	edit dl rm
gettext.py	20637	0644	edit dl rm
glob.py	2838	0644	edit dl rm
gzip.py	24403	0644	edit dl rm
hashlib.py	6193	0644	edit dl rm
heapq.py	17997	0644	edit dl rm
hmac.py	4440	0644	edit dl rm
imaplib.py	50111	0644	edit dl rm
imghdr.py	3528	0644	edit dl rm
imp.py	9727	0644	edit dl rm
inspect.py	78960	0644	edit dl rm
io.py	3280	0644	edit dl rm
ipaddress.py	70303	0644	edit dl rm
keyword.py	2060	0755	edit dl rm
linecache.py	3864	0644	edit dl rm
locale.py	93215	0644	edit dl rm
lzma.py	17454	0644	edit dl rm
macpath.py	5617	0644	edit dl rm
macurl2path.py	2732	0644	edit dl rm
mailbox.py	79093	0644	edit dl rm
mailcap.py	7437	0644	edit dl rm
mimetypes.py	20735	0644	edit dl rm
modulefinder.py	23198	0644	edit dl rm
netrc.py	5747	0644	edit dl rm
nntplib.py	42786	0644	edit dl rm
ntpath.py	20437	0644	edit dl rm
nturl2path.py	2396	0644	edit dl rm
numbers.py	10398	0644	edit dl rm
opcode.py	5098	0644	edit dl rm
optparse.py	60346	0644	edit dl rm
os.py	34779	0644	edit dl rm
os2emxpath.py	4659	0644	edit dl rm
pdb.py	60653	0755	edit dl rm
pickle.py	47858	0644	edit dl rm
pickletools.py	81349	0644	edit dl rm
pipes.py	8916	0644	edit dl rm
pkgutil.py	21539	0644	edit dl rm
platform.py	50742	0755	edit dl rm
plistlib.py	14777	0644	edit dl rm
poplib.py	11372	0644	edit dl rm
posixpath.py	14254	0644	edit dl rm
pprint.py	12700	0644	edit dl rm
profile.py	21448	0755	edit dl rm
pstats.py	26372	0644	edit dl rm
pty.py	5055	0644	edit dl rm
pyclbr.py	13438	0644	edit dl rm
pydoc.py	101644	0755	edit dl rm
py_compile.py	6717	0644	edit dl rm
queue.py	8835	0644	edit dl rm
quopri.py	7315	0755	edit dl rm
random.py	25660	0644	edit dl rm
re.py	14973	0644	edit dl rm
reprlib.py	5110	0644	edit dl rm
rlcompleter.py	5526	0644	edit dl rm
runpy.py	10413	0644	edit dl rm
sched.py	6399	0644	edit dl rm
shelve.py	8243	0644	edit dl rm
shlex.py	11502	0644	edit dl rm
shutil.py	39147	0644	edit dl rm
site.py	21971	0644	edit dl rm
smtpd.py	30207	0755	edit dl rm
smtplib.py	38021	0755	edit dl rm
sndhdr.py	6219	0644	edit dl rm
socket.py	14913	0644	edit dl rm
socketserver.py	24196	0644	edit dl rm
sre_compile.py	16345	0644	edit dl rm
sre_constants.py	7231	0644	edit dl rm
sre_parse.py	30212	0644	edit dl rm
ssl.py	24478	0644	edit dl rm
stat.py	4304	0644	edit dl rm
string.py	9410	0644	edit dl rm
stringprep.py	12917	0644	edit dl rm
struct.py	238	0644	edit dl rm
subprocess.py	67578	0644	edit dl rm
sunau.py	17523	0644	edit dl rm
symbol.py	2051	0755	edit dl rm
symtable.py	7383	0644	edit dl rm
sysconfig.py	25174	0644	edit dl rm
tabnanny.py	11410	0755	edit dl rm
tarfile.py	88864	0755	edit dl rm
telnetlib.py	27349	0644	edit dl rm
tempfile.py	23013	0644	edit dl rm
textwrap.py	16488	0644	edit dl rm
this.py	1003	0644	edit dl rm
threading.py	45641	0644	edit dl rm
timeit.py	12395	0755	edit dl rm
token.py	3034	0644	edit dl rm
tokenize.py	24876	0644	edit dl rm
trace.py	31487	0755	edit dl rm
traceback.py	11982	0644	edit dl rm
tty.py	879	0644	edit dl rm
types.py	3167	0644	edit dl rm
uu.py	6766	0755	edit dl rm
uuid.py	22349	0644	edit dl rm
warnings.py	13825	0644	edit dl rm
wave.py	18579	0644	edit dl rm
weakref.py	11495	0644	edit dl rm
webbrowser.py	22913	0755	edit dl rm
xdrlib.py	5381	0644	edit dl rm
zipfile.py	66424	0644	edit dl rm
_compat_pickle.py	4338	0644	edit dl rm
_dummy_thread.py	4769	0644	edit dl rm
_markupbase.py	14598	0644	edit dl rm
_osx_support.py	18855	0644	edit dl rm
_pyio.py	72905	0644	edit dl rm
_strptime.py	21674	0644	edit dl rm
_sysconfigdata.py	21056	0644	edit dl rm
_threading_local.py	7410	0644	edit dl rm
_weakrefset.py	5705	0644	edit dl rm
__future__.py	4584	0644	edit dl rm
__phello__.foo.py	64	0644	edit dl rm

Edit: /opt/alt/python33/lib64/python3.3/gzip.py (24403B)

"""Functions that read and write gzipped files.

The user of the file doesn't have to worry about the compression,
but random access is not allowed."""

# based on Andrew Kuchling's minigzip.py distributed with the zlib module

import struct, sys, time, os
import zlib
import builtins
import io

__all__ = ["GzipFile", "open", "compress", "decompress"]

FTEXT, FHCRC, FEXTRA, FNAME, FCOMMENT = 1, 2, 4, 8, 16

READ, WRITE = 1, 2

def open(filename, mode="rb", compresslevel=9,
         encoding=None, errors=None, newline=None):
    """Open a gzip-compressed file in binary or text mode.

The filename argument can be an actual filename (a str or bytes object), or
    an existing file object to read from or write to.

The mode argument can be "r", "rb", "w", "wb", "a" or "ab" for binary mode,
    or "rt", "wt" or "at" for text mode. The default mode is "rb", and the
    default compresslevel is 9.

For binary mode, this function is equivalent to the GzipFile constructor:
    GzipFile(filename, mode, compresslevel). In this case, the encoding, errors
    and newline arguments must not be provided.

For text mode, a GzipFile object is created, and wrapped in an
    io.TextIOWrapper instance with the specified encoding, error handling
    behavior, and line ending(s).

"""
    if "t" in mode:
        if "b" in mode:
            raise ValueError("Invalid mode: %r" % (mode,))
    else:
        if encoding is not None:
            raise ValueError("Argument 'encoding' not supported in binary mode")
        if errors is not None:
            raise ValueError("Argument 'errors' not supported in binary mode")
        if newline is not None:
            raise ValueError("Argument 'newline' not supported in binary mode")

gz_mode = mode.replace("t", "")
    if isinstance(filename, (str, bytes)):
        binary_file = GzipFile(filename, gz_mode, compresslevel)
    elif hasattr(filename, "read") or hasattr(filename, "write"):
        binary_file = GzipFile(None, gz_mode, compresslevel, filename)
    else:
        raise TypeError("filename must be a str or bytes object, or a file")

if "t" in mode:
        return io.TextIOWrapper(binary_file, encoding, errors, newline)
    else:
        return binary_file

def write32u(output, value):
    # The L format writes the bit pattern correctly whether signed
    # or unsigned.
    output.write(struct.pack("<L", value))

def read32(input):
    return struct.unpack("<I", input.read(4))[0]

class _PaddedFile:
    """Minimal read-only file object that prepends a string to the contents
    of an actual file. Shouldn't be used outside of gzip.py, as it lacks
    essential functionality."""

def __init__(self, f, prepend=b''):
        self._buffer = prepend
        self._length = len(prepend)
        self.file = f
        self._read = 0

def read(self, size):
        if self._read is None:
            return self.file.read(size)
        if self._read + size <= self._length:
            read = self._read
            self._read += size
            return self._buffer[read:self._read]
        else:
            read = self._read
            self._read = None
            return self._buffer[read:] + \
                   self.file.read(size-self._length+read)

def prepend(self, prepend=b'', readprevious=False):
        if self._read is None:
            self._buffer = prepend
        elif readprevious and len(prepend) <= self._read:
            self._read -= len(prepend)
            return
        else:
            self._buffer = self._buffer[self._read:] + prepend
        self._length = len(self._buffer)
        self._read = 0

def unused(self):
        if self._read is None:
            return b''
        return self._buffer[self._read:]

def seek(self, offset, whence=0):
        # This is only ever called with offset=whence=0
        if whence == 1 and self._read is not None:
            if 0 <= offset + self._read <= self._length:
                self._read += offset
                return
            else:
                offset += self._length - self._read
        self._read = None
        self._buffer = None
        return self.file.seek(offset, whence)

def __getattr__(self, name):
        return getattr(self.file, name)

class GzipFile(io.BufferedIOBase):
    """The GzipFile class simulates most of the methods of a file object with
    the exception of the readinto() and truncate() methods.

This class only supports opening files in binary mode. If you need to open a
    compressed file in text mode, use the gzip.open() function.

"""

myfileobj = None
    max_read_chunk = 10 * 1024 * 1024   # 10Mb

def __init__(self, filename=None, mode=None,
                 compresslevel=9, fileobj=None, mtime=None):
        """Constructor for the GzipFile class.

At least one of fileobj and filename must be given a
        non-trivial value.

The new class instance is based on fileobj, which can be a regular
        file, an io.BytesIO object, or any other object which simulates a file.
        It defaults to None, in which case filename is opened to provide
        a file object.

When fileobj is not None, the filename argument is only used to be
        included in the gzip file header, which may includes the original
        filename of the uncompressed file.  It defaults to the filename of
        fileobj, if discernible; otherwise, it defaults to the empty string,
        and in this case the original filename is not included in the header.

The mode argument can be any of 'r', 'rb', 'a', 'ab', 'w', or 'wb',
        depending on whether the file will be read or written.  The default
        is the mode of fileobj if discernible; otherwise, the default is 'rb'.
        A mode of 'r' is equivalent to one of 'rb', and similarly for 'w' and
        'wb', and 'a' and 'ab'.

The compresslevel argument is an integer from 0 to 9 controlling the
        level of compression; 1 is fastest and produces the least compression,
        and 9 is slowest and produces the most compression. 0 is no compression
        at all. The default is 9.

The mtime argument is an optional numeric timestamp to be written
        to the stream when compressing.  All gzip compressed streams
        are required to contain a timestamp.  If omitted or None, the
        current time is used.  This module ignores the timestamp when
        decompressing; however, some programs, such as gunzip, make use
        of it.  The format of the timestamp is the same as that of the
        return value of time.time() and of the st_mtime member of the
        object returned by os.stat().

"""

if mode and ('t' in mode or 'U' in mode):
            raise ValueError("Invalid mode: {!r}".format(mode))
        if mode and 'b' not in mode:
            mode += 'b'
        if fileobj is None:
            fileobj = self.myfileobj = builtins.open(filename, mode or 'rb')
        if filename is None:
            filename = getattr(fileobj, 'name', '')
            if not isinstance(filename, (str, bytes)):
                filename = ''
        if mode is None:
            mode = getattr(fileobj, 'mode', 'rb')

if mode.startswith('r'):
            self.mode = READ
            # Set flag indicating start of a new member
            self._new_member = True
            # Buffer data read from gzip file. extrastart is offset in
            # stream where buffer starts. extrasize is number of
            # bytes remaining in buffer from current stream position.
            self.extrabuf = b""
            self.extrasize = 0
            self.extrastart = 0
            self.name = filename
            # Starts small, scales exponentially
            self.min_readsize = 100
            fileobj = _PaddedFile(fileobj)

elif mode.startswith(('w', 'a')):
            self.mode = WRITE
            self._init_write(filename)
            self.compress = zlib.compressobj(compresslevel,
                                             zlib.DEFLATED,
                                             -zlib.MAX_WBITS,
                                             zlib.DEF_MEM_LEVEL,
                                             0)
        else:
            raise ValueError("Invalid mode: {!r}".format(mode))

self.fileobj = fileobj
        self.offset = 0
        self.mtime = mtime

if self.mode == WRITE:
            self._write_gzip_header()

@property
    def filename(self):
        import warnings
        warnings.warn("use the name attribute", DeprecationWarning, 2)
        if self.mode == WRITE and self.name[-3:] != ".gz":
            return self.name + ".gz"
        return self.name

def __repr__(self):
        fileobj = self.fileobj
        if isinstance(fileobj, _PaddedFile):
            fileobj = fileobj.file
        s = repr(fileobj)
        return '<gzip ' + s[1:-1] + ' ' + hex(id(self)) + '>'

def _check_closed(self):
        """Raises a ValueError if the underlying file object has been closed.

"""
        if self.closed:
            raise ValueError('I/O operation on closed file.')

def _init_write(self, filename):
        self.name = filename
        self.crc = zlib.crc32(b"") & 0xffffffff
        self.size = 0
        self.writebuf = []
        self.bufsize = 0

def _write_gzip_header(self):
        self.fileobj.write(b'\037\213')             # magic header
        self.fileobj.write(b'\010')                 # compression method
        try:
            # RFC 1952 requires the FNAME field to be Latin-1. Do not
            # include filenames that cannot be represented that way.
            fname = os.path.basename(self.name)
            if not isinstance(fname, bytes):
                fname = fname.encode('latin-1')
            if fname.endswith(b'.gz'):
                fname = fname[:-3]
        except UnicodeEncodeError:
            fname = b''
        flags = 0
        if fname:
            flags = FNAME
        self.fileobj.write(chr(flags).encode('latin-1'))
        mtime = self.mtime
        if mtime is None:
            mtime = time.time()
        write32u(self.fileobj, int(mtime))
        self.fileobj.write(b'\002')
        self.fileobj.write(b'\377')
        if fname:
            self.fileobj.write(fname + b'\000')

def _init_read(self):
        self.crc = zlib.crc32(b"") & 0xffffffff
        self.size = 0

def _read_gzip_header(self):
        magic = self.fileobj.read(2)
        if magic == b'':
            raise EOFError("Reached EOF")

if magic != b'\037\213':
            raise IOError('Not a gzipped file')

method = ord( self.fileobj.read(1) )
        if method != 8:
            raise IOError('Unknown compression method')
        flag = ord( self.fileobj.read(1) )
        self.mtime = read32(self.fileobj)
        # extraflag = self.fileobj.read(1)
        # os = self.fileobj.read(1)
        self.fileobj.read(2)

if flag & FEXTRA:
            # Read & discard the extra field, if present
            xlen = ord(self.fileobj.read(1))
            xlen = xlen + 256*ord(self.fileobj.read(1))
            self.fileobj.read(xlen)
        if flag & FNAME:
            # Read and discard a null-terminated string containing the filename
            while True:
                s = self.fileobj.read(1)
                if not s or s==b'\000':
                    break
        if flag & FCOMMENT:
            # Read and discard a null-terminated string containing a comment
            while True:
                s = self.fileobj.read(1)
                if not s or s==b'\000':
                    break
        if flag & FHCRC:
            self.fileobj.read(2)     # Read & discard the 16-bit header CRC

unused = self.fileobj.unused()
        if unused:
            uncompress = self.decompress.decompress(unused)
            self._add_read_data(uncompress)

def write(self,data):
        self._check_closed()
        if self.mode != WRITE:
            import errno
            raise IOError(errno.EBADF, "write() on read-only GzipFile object")

if self.fileobj is None:
            raise ValueError("write() on closed GzipFile object")

# Convert data type if called by io.BufferedWriter.
        if isinstance(data, memoryview):
            data = data.tobytes()

if len(data) > 0:
            self.size = self.size + len(data)
            self.crc = zlib.crc32(data, self.crc) & 0xffffffff
            self.fileobj.write( self.compress.compress(data) )
            self.offset += len(data)

return len(data)

def read(self, size=-1):
        self._check_closed()
        if self.mode != READ:
            import errno
            raise IOError(errno.EBADF, "read() on write-only GzipFile object")

if self.extrasize <= 0 and self.fileobj is None:
            return b''

readsize = 1024
        if size < 0:        # get the whole thing
            try:
                while True:
                    self._read(readsize)
                    readsize = min(self.max_read_chunk, readsize * 2)
            except EOFError:
                size = self.extrasize
        else:               # just get some more of it
            try:
                while size > self.extrasize:
                    self._read(readsize)
                    readsize = min(self.max_read_chunk, readsize * 2)
            except EOFError:
                if size > self.extrasize:
                    size = self.extrasize

offset = self.offset - self.extrastart
        chunk = self.extrabuf[offset: offset + size]
        self.extrasize = self.extrasize - size

self.offset += size
        return chunk

def read1(self, size=-1):
        self._check_closed()
        if self.mode != READ:
            import errno
            raise IOError(errno.EBADF, "read1() on write-only GzipFile object")

if self.extrasize <= 0 and self.fileobj is None:
            return b''

try:
            # For certain input data, a single call to _read() may not return
            # any data. In this case, retry until we get some data or reach EOF.
            while self.extrasize <= 0:
                self._read()
        except EOFError:
            pass
        if size < 0 or size > self.extrasize:
            size = self.extrasize

offset = self.offset - self.extrastart
        chunk = self.extrabuf[offset: offset + size]
        self.extrasize -= size
        self.offset += size
        return chunk

def peek(self, n):
        if self.mode != READ:
            import errno
            raise IOError(errno.EBADF, "peek() on write-only GzipFile object")

# Do not return ridiculously small buffers, for one common idiom
        # is to call peek(1) and expect more bytes in return.
        if n < 100:
            n = 100
        if self.extrasize == 0:
            if self.fileobj is None:
                return b''
            try:
                # Ensure that we don't return b"" if we haven't reached EOF.
                while self.extrasize == 0:
                    # 1024 is the same buffering heuristic used in read()
                    self._read(max(n, 1024))
            except EOFError:
                pass
        offset = self.offset - self.extrastart
        remaining = self.extrasize
        assert remaining == len(self.extrabuf) - offset
        return self.extrabuf[offset:offset + n]

def _unread(self, buf):
        self.extrasize = len(buf) + self.extrasize
        self.offset -= len(buf)

def _read(self, size=1024):
        if self.fileobj is None:
            raise EOFError("Reached EOF")

if self._new_member:
            # If the _new_member flag is set, we have to
            # jump to the next member, if there is one.
            self._init_read()
            self._read_gzip_header()
            self.decompress = zlib.decompressobj(-zlib.MAX_WBITS)
            self._new_member = False

# Read a chunk of data from the file
        buf = self.fileobj.read(size)

# If the EOF has been reached, flush the decompression object
        # and mark this object as finished.

if buf == b"":
            uncompress = self.decompress.flush()
            # Prepend the already read bytes to the fileobj to they can be
            # seen by _read_eof()
            self.fileobj.prepend(self.decompress.unused_data, True)
            self._read_eof()
            self._add_read_data( uncompress )
            raise EOFError('Reached EOF')

uncompress = self.decompress.decompress(buf)
        self._add_read_data( uncompress )

if self.decompress.unused_data != b"":
            # Ending case: we've come to the end of a member in the file,
            # so seek back to the start of the unused data, finish up
            # this member, and read a new gzip header.
            # Prepend the already read bytes to the fileobj to they can be
            # seen by _read_eof() and _read_gzip_header()
            self.fileobj.prepend(self.decompress.unused_data, True)
            # Check the CRC and file size, and set the flag so we read
            # a new member on the next call
            self._read_eof()
            self._new_member = True

def _add_read_data(self, data):
        self.crc = zlib.crc32(data, self.crc) & 0xffffffff
        offset = self.offset - self.extrastart
        self.extrabuf = self.extrabuf[offset:] + data
        self.extrasize = self.extrasize + len(data)
        self.extrastart = self.offset
        self.size = self.size + len(data)

def _read_eof(self):
        # We've read to the end of the file
        # We check the that the computed CRC and size of the
        # uncompressed data matches the stored values.  Note that the size
        # stored is the true file size mod 2**32.
        crc32 = read32(self.fileobj)
        isize = read32(self.fileobj)  # may exceed 2GB
        if crc32 != self.crc:
            raise IOError("CRC check failed %s != %s" % (hex(crc32),
                                                         hex(self.crc)))
        elif isize != (self.size & 0xffffffff):
            raise IOError("Incorrect length of data produced")

# Gzip files can be padded with zeroes and still have archives.
        # Consume all zero bytes and set the file position to the first
        # non-zero byte. See http://www.gzip.org/#faq8
        c = b"\x00"
        while c == b"\x00":
            c = self.fileobj.read(1)
        if c:
            self.fileobj.prepend(c, True)

@property
    def closed(self):
        return self.fileobj is None

def close(self):
        if self.fileobj is None:
            return
        if self.mode == WRITE:
            self.fileobj.write(self.compress.flush())
            write32u(self.fileobj, self.crc)
            # self.size may exceed 2GB, or even 4GB
            write32u(self.fileobj, self.size & 0xffffffff)
            self.fileobj = None
        elif self.mode == READ:
            self.fileobj = None
        if self.myfileobj:
            self.myfileobj.close()
            self.myfileobj = None

def flush(self,zlib_mode=zlib.Z_SYNC_FLUSH):
        self._check_closed()
        if self.mode == WRITE:
            # Ensure the compressor's buffer is flushed
            self.fileobj.write(self.compress.flush(zlib_mode))
            self.fileobj.flush()

def fileno(self):
        """Invoke the underlying file object's fileno() method.

This will raise AttributeError if the underlying file object
        doesn't support fileno().
        """
        return self.fileobj.fileno()

def rewind(self):
        '''Return the uncompressed stream file position indicator to the
        beginning of the file'''
        if self.mode != READ:
            raise IOError("Can't rewind in write mode")
        self.fileobj.seek(0)
        self._new_member = True
        self.extrabuf = b""
        self.extrasize = 0
        self.extrastart = 0
        self.offset = 0

def readable(self):
        return self.mode == READ

def writable(self):
        return self.mode == WRITE

def seekable(self):
        return True

def seek(self, offset, whence=0):
        if whence:
            if whence == 1:
                offset = self.offset + offset
            else:
                raise ValueError('Seek from end not supported')
        if self.mode == WRITE:
            if offset < self.offset:
                raise IOError('Negative seek in write mode')
            count = offset - self.offset
            chunk = bytes(1024)
            for i in range(count // 1024):
                self.write(chunk)
            self.write(bytes(count % 1024))
        elif self.mode == READ:
            if offset < self.offset:
                # for negative seek, rewind and do positive seek
                self.rewind()
            count = offset - self.offset
            for i in range(count // 1024):
                self.read(1024)
            self.read(count % 1024)

return self.offset

def readline(self, size=-1):
        if size < 0:
            # Shortcut common case - newline found in buffer.
            offset = self.offset - self.extrastart
            i = self.extrabuf.find(b'\n', offset) + 1
            if i > 0:
                self.extrasize -= i - offset
                self.offset += i - offset
                return self.extrabuf[offset: i]

size = sys.maxsize
            readsize = self.min_readsize
        else:
            readsize = size
        bufs = []
        while size != 0:
            c = self.read(readsize)
            i = c.find(b'\n')

# We set i=size to break out of the loop under two
            # conditions: 1) there's no newline, and the chunk is
            # larger than size, or 2) there is a newline, but the
            # resulting line would be longer than 'size'.
            if (size <= i) or (i == -1 and len(c) > size):
                i = size - 1

if i >= 0 or c == b'':
                bufs.append(c[:i + 1])    # Add portion of last chunk
                self._unread(c[i + 1:])   # Push back rest of chunk
                break

# Append chunk to list, decrease 'size',
            bufs.append(c)
            size = size - len(c)
            readsize = min(size, readsize * 2)
        if readsize > self.min_readsize:
            self.min_readsize = min(readsize, self.min_readsize * 2, 512)
        return b''.join(bufs) # Return resulting line

def compress(data, compresslevel=9):
    """Compress data in one shot and return the compressed string.
    Optional argument is the compression level, in range of 0-9.
    """
    buf = io.BytesIO()
    with GzipFile(fileobj=buf, mode='wb', compresslevel=compresslevel) as f:
        f.write(data)
    return buf.getvalue()

def decompress(data):
    """Decompress a gzip compressed string in one shot.
    Return the decompressed string.
    """
    with GzipFile(fileobj=io.BytesIO(data)) as f:
        return f.read()

def _test():
    # Act like gzip; with -d, act like gunzip.
    # The input file is not deleted, however, nor are any other gzip
    # options or features supported.
    args = sys.argv[1:]
    decompress = args and args[0] == "-d"
    if decompress:
        args = args[1:]
    if not args:
        args = ["-"]
    for arg in args:
        if decompress:
            if arg == "-":
                f = GzipFile(filename="", mode="rb", fileobj=sys.stdin.buffer)
                g = sys.stdout.buffer
            else:
                if arg[-3:] != ".gz":
                    print("filename doesn't end in .gz:", repr(arg))
                    continue
                f = open(arg, "rb")
                g = builtins.open(arg[:-3], "wb")
        else:
            if arg == "-":
                f = sys.stdin.buffer
                g = GzipFile(filename="", mode="wb", fileobj=sys.stdout.buffer)
            else:
                f = builtins.open(arg, "rb")
                g = open(arg + ".gz", "wb")
        while True:
            chunk = f.read(1024)
            if not chunk:
                break
            g.write(chunk)
        if g is not sys.stdout.buffer:
            g.close()
        if f is not sys.stdin.buffer:
            f.close()

if __name__ == '__main__':
    _test()

cmd: