Linux cpanel.rrshost.in 5.15.0-25-generic #25-Ubuntu SMP Wed Mar 30 15:54:22 UTC 2022 x86_64
Apache
: 109.123.238.221 | : 172.69.17.165
128 Domain
8.2.28
aev999
Terminal
AUTO ROOT
Adminer
Backdoor Destroyer
Linux Exploit
Lock Shell
Lock File
Create User
CREATE RDP
PHP Mailer
BACKCONNECT
HASH IDENTIFIER
README
+ Create Folder
+ Create File
/
usr /
share /
doc /
python2.7 /
html /
library /
[ HOME SHELL ]
Name
Size
Permission
Action
2to3.html
63.71
KB
-rw-r--r--
__builtin__.html
11.79
KB
-rw-r--r--
__future__.html
15.58
KB
-rw-r--r--
__main__.html
8.33
KB
-rw-r--r--
_winreg.html
73.99
KB
-rw-r--r--
abc.html
26.82
KB
-rw-r--r--
aepack.html
15.47
KB
-rw-r--r--
aetools.html
18.79
KB
-rw-r--r--
aetypes.html
27.08
KB
-rw-r--r--
aifc.html
29.59
KB
-rw-r--r--
al.html
22.13
KB
-rw-r--r--
allos.html
35.48
KB
-rw-r--r--
anydbm.html
19.31
KB
-rw-r--r--
archiving.html
10.64
KB
-rw-r--r--
argparse.html
269.59
KB
-rw-r--r--
array.html
35.35
KB
-rw-r--r--
ast.html
42.42
KB
-rw-r--r--
asynchat.html
35.84
KB
-rw-r--r--
asyncore.html
43.22
KB
-rw-r--r--
atexit.html
19.23
KB
-rw-r--r--
audioop.html
41.32
KB
-rw-r--r--
autogil.html
9.77
KB
-rw-r--r--
base64.html
24.8
KB
-rw-r--r--
basehttpserver.html
40.6
KB
-rw-r--r--
bastion.html
13.02
KB
-rw-r--r--
bdb.html
50.06
KB
-rw-r--r--
binascii.html
26.64
KB
-rw-r--r--
binhex.html
12.66
KB
-rw-r--r--
bisect.html
28.52
KB
-rw-r--r--
bsddb.html
32.02
KB
-rw-r--r--
bz2.html
31.92
KB
-rw-r--r--
calendar.html
50.16
KB
-rw-r--r--
carbon.html
54.14
KB
-rw-r--r--
cd.html
35.24
KB
-rw-r--r--
cgi.html
58.4
KB
-rw-r--r--
cgihttpserver.html
15.12
KB
-rw-r--r--
cgitb.html
13.5
KB
-rw-r--r--
chunk.html
17.41
KB
-rw-r--r--
cmath.html
32.41
KB
-rw-r--r--
cmd.html
32.69
KB
-rw-r--r--
code.html
28.92
KB
-rw-r--r--
codecs.html
125.92
KB
-rw-r--r--
codeop.html
16.42
KB
-rw-r--r--
collections.html
150.36
KB
-rw-r--r--
colorpicker.html
9.02
KB
-rw-r--r--
colorsys.html
14.38
KB
-rw-r--r--
commands.html
16.63
KB
-rw-r--r--
compileall.html
21.18
KB
-rw-r--r--
compiler.html
78.14
KB
-rw-r--r--
configparser.html
73.92
KB
-rw-r--r--
constants.html
14.68
KB
-rw-r--r--
contextlib.html
22.91
KB
-rw-r--r--
cookie.html
45.38
KB
-rw-r--r--
cookielib.html
102.78
KB
-rw-r--r--
copy.html
14.21
KB
-rw-r--r--
copy_reg.html
15.82
KB
-rw-r--r--
crypt.html
11.62
KB
-rw-r--r--
crypto.html
8.35
KB
-rw-r--r--
csv.html
82.79
KB
-rw-r--r--
ctypes.html
280.57
KB
-rw-r--r--
curses.ascii.html
28.97
KB
-rw-r--r--
curses.html
200.94
KB
-rw-r--r--
curses.panel.html
18.43
KB
-rw-r--r--
custominterp.html
8.59
KB
-rw-r--r--
datatypes.html
18.84
KB
-rw-r--r--
datetime.html
261.02
KB
-rw-r--r--
dbhash.html
18.4
KB
-rw-r--r--
dbm.html
14.75
KB
-rw-r--r--
debug.html
11.28
KB
-rw-r--r--
decimal.html
239.14
KB
-rw-r--r--
development.html
15.27
KB
-rw-r--r--
difflib.html
96.93
KB
-rw-r--r--
dircache.html
13.66
KB
-rw-r--r--
dis.html
96.52
KB
-rw-r--r--
distribution.html
8.27
KB
-rw-r--r--
distutils.html
10.97
KB
-rw-r--r--
dl.html
19.27
KB
-rw-r--r--
doctest.html
193.18
KB
-rw-r--r--
docxmlrpcserver.html
20.02
KB
-rw-r--r--
dumbdbm.html
16.74
KB
-rw-r--r--
dummy_thread.html
11.04
KB
-rw-r--r--
dummy_threading.html
9.96
KB
-rw-r--r--
easydialogs.html
38.83
KB
-rw-r--r--
email-examples.html
47.2
KB
-rw-r--r--
email.charset.html
32.45
KB
-rw-r--r--
email.encoders.html
14.09
KB
-rw-r--r--
email.errors.html
19.2
KB
-rw-r--r--
email.generator.html
24.78
KB
-rw-r--r--
email.header.html
31.12
KB
-rw-r--r--
email.html
55.3
KB
-rw-r--r--
email.iterators.html
14.22
KB
-rw-r--r--
email.message.html
74.91
KB
-rw-r--r--
email.mime.html
34.51
KB
-rw-r--r--
email.parser.html
37.09
KB
-rw-r--r--
email.utils.html
30.04
KB
-rw-r--r--
ensurepip.html
20.21
KB
-rw-r--r--
errno.html
52.31
KB
-rw-r--r--
exceptions.html
73.4
KB
-rw-r--r--
fcntl.html
27.85
KB
-rw-r--r--
filecmp.html
26.49
KB
-rw-r--r--
fileformats.html
10.21
KB
-rw-r--r--
fileinput.html
29.36
KB
-rw-r--r--
filesys.html
11.55
KB
-rw-r--r--
fl.html
71.58
KB
-rw-r--r--
fm.html
15
KB
-rw-r--r--
fnmatch.html
17.78
KB
-rw-r--r--
formatter.html
43.91
KB
-rw-r--r--
fpectl.html
17.84
KB
-rw-r--r--
fpformat.html
12.65
KB
-rw-r--r--
fractions.html
27.17
KB
-rw-r--r--
framework.html
44.24
KB
-rw-r--r--
frameworks.html
8.11
KB
-rw-r--r--
ftplib.html
56.56
KB
-rw-r--r--
functions.html
216.84
KB
-rw-r--r--
functools.html
31.06
KB
-rw-r--r--
future_builtins.html
15.9
KB
-rw-r--r--
gc.html
30.74
KB
-rw-r--r--
gdbm.html
19.35
KB
-rw-r--r--
gensuitemodule.html
14.54
KB
-rw-r--r--
getopt.html
26.56
KB
-rw-r--r--
getpass.html
12.5
KB
-rw-r--r--
gettext.html
91.32
KB
-rw-r--r--
gl.html
26.71
KB
-rw-r--r--
glob.html
15.42
KB
-rw-r--r--
grp.html
12.33
KB
-rw-r--r--
gzip.html
21.95
KB
-rw-r--r--
hashlib.html
27.4
KB
-rw-r--r--
heapq.html
36.72
KB
-rw-r--r--
hmac.html
15.97
KB
-rw-r--r--
hotshot.html
22.69
KB
-rw-r--r--
htmllib.html
29.9
KB
-rw-r--r--
htmlparser.html
45.11
KB
-rw-r--r--
httplib.html
78.55
KB
-rw-r--r--
i18n.html
10.61
KB
-rw-r--r--
ic.html
22.03
KB
-rw-r--r--
idle.html
45.74
KB
-rw-r--r--
imageop.html
20.94
KB
-rw-r--r--
imaplib.html
69.9
KB
-rw-r--r--
imgfile.html
14.91
KB
-rw-r--r--
imghdr.html
13.43
KB
-rw-r--r--
imp.html
41.48
KB
-rw-r--r--
importlib.html
10.27
KB
-rw-r--r--
imputil.html
36.11
KB
-rw-r--r--
index.html
82.54
KB
-rw-r--r--
inspect.html
64.31
KB
-rw-r--r--
internet.html
26.77
KB
-rw-r--r--
intro.html
9.76
KB
-rw-r--r--
io.html
122.3
KB
-rw-r--r--
ipc.html
17.18
KB
-rw-r--r--
itertools.html
129.91
KB
-rw-r--r--
jpeg.html
15.36
KB
-rw-r--r--
json.html
79.09
KB
-rw-r--r--
keyword.html
9.27
KB
-rw-r--r--
language.html
12.35
KB
-rw-r--r--
linecache.html
12.7
KB
-rw-r--r--
locale.html
68.54
KB
-rw-r--r--
logging.config.html
82.23
KB
-rw-r--r--
logging.handlers.html
91.96
KB
-rw-r--r--
logging.html
123.15
KB
-rw-r--r--
mac.html
24.49
KB
-rw-r--r--
macos.html
18.51
KB
-rw-r--r--
macosa.html
14.55
KB
-rw-r--r--
macostools.html
19.67
KB
-rw-r--r--
macpath.html
9.19
KB
-rw-r--r--
mailbox.html
185.53
KB
-rw-r--r--
mailcap.html
15.3
KB
-rw-r--r--
markup.html
20.37
KB
-rw-r--r--
marshal.html
19.88
KB
-rw-r--r--
math.html
50.52
KB
-rw-r--r--
md5.html
16.65
KB
-rw-r--r--
mhlib.html
30.04
KB
-rw-r--r--
mimetools.html
23.84
KB
-rw-r--r--
mimetypes.html
35.82
KB
-rw-r--r--
mimewriter.html
18.19
KB
-rw-r--r--
mimify.html
16.96
KB
-rw-r--r--
miniaeframe.html
14.5
KB
-rw-r--r--
misc.html
7.77
KB
-rw-r--r--
mm.html
10.19
KB
-rw-r--r--
mmap.html
33.52
KB
-rw-r--r--
modulefinder.html
19.85
KB
-rw-r--r--
modules.html
9.68
KB
-rw-r--r--
msilib.html
72.78
KB
-rw-r--r--
msvcrt.html
24.1
KB
-rw-r--r--
multifile.html
28.82
KB
-rw-r--r--
multiprocessing.html
423.97
KB
-rw-r--r--
mutex.html
13.56
KB
-rw-r--r--
netdata.html
19.28
KB
-rw-r--r--
netrc.html
15.51
KB
-rw-r--r--
new.html
16.1
KB
-rw-r--r--
nis.html
13.19
KB
-rw-r--r--
nntplib.html
51.08
KB
-rw-r--r--
numbers.html
40.91
KB
-rw-r--r--
numeric.html
14.85
KB
-rw-r--r--
operator.html
118.32
KB
-rw-r--r--
optparse.html
251.08
KB
-rw-r--r--
os.html
270.49
KB
-rw-r--r--
os.path.html
48.87
KB
-rw-r--r--
ossaudiodev.html
49.79
KB
-rw-r--r--
othergui.html
9.98
KB
-rw-r--r--
parser.html
44.52
KB
-rw-r--r--
pdb.html
41.44
KB
-rw-r--r--
persistence.html
16.25
KB
-rw-r--r--
pickle.html
107.94
KB
-rw-r--r--
pickletools.html
13.21
KB
-rw-r--r--
pipes.html
21.85
KB
-rw-r--r--
pkgutil.html
30.59
KB
-rw-r--r--
platform.html
40.14
KB
-rw-r--r--
plistlib.html
20.96
KB
-rw-r--r--
popen2.html
30.13
KB
-rw-r--r--
poplib.html
27.93
KB
-rw-r--r--
posix.html
17.27
KB
-rw-r--r--
posixfile.html
23.68
KB
-rw-r--r--
pprint.html
36.42
KB
-rw-r--r--
profile.html
76.65
KB
-rw-r--r--
pty.html
11.42
KB
-rw-r--r--
pwd.html
13.53
KB
-rw-r--r--
py_compile.html
13.33
KB
-rw-r--r--
pyclbr.html
18.14
KB
-rw-r--r--
pydoc.html
14.33
KB
-rw-r--r--
pyexpat.html
93.28
KB
-rw-r--r--
python.html
13.53
KB
-rw-r--r--
queue.html
29.64
KB
-rw-r--r--
quopri.html
14.5
KB
-rw-r--r--
random.html
47.78
KB
-rw-r--r--
re.html
163.11
KB
-rw-r--r--
readline.html
41.2
KB
-rw-r--r--
repr.html
24.57
KB
-rw-r--r--
resource.html
30.86
KB
-rw-r--r--
restricted.html
12.69
KB
-rw-r--r--
rexec.html
43.59
KB
-rw-r--r--
rfc822.html
51.25
KB
-rw-r--r--
rlcompleter.html
15.29
KB
-rw-r--r--
robotparser.html
15.01
KB
-rw-r--r--
runpy.html
23.55
KB
-rw-r--r--
sched.html
21.76
KB
-rw-r--r--
scrolledtext.html
10.67
KB
-rw-r--r--
select.html
50.17
KB
-rw-r--r--
sets.html
39.92
KB
-rw-r--r--
sgi.html
11.09
KB
-rw-r--r--
sgmllib.html
38.77
KB
-rw-r--r--
sha.html
14.55
KB
-rw-r--r--
shelve.html
32.93
KB
-rw-r--r--
shlex.html
38.43
KB
-rw-r--r--
shutil.html
49.49
KB
-rw-r--r--
signal.html
36.52
KB
-rw-r--r--
simplehttpserver.html
21.57
KB
-rw-r--r--
simplexmlrpcserver.html
40.41
KB
-rw-r--r--
site.html
29
KB
-rw-r--r--
smtpd.html
15.64
KB
-rw-r--r--
smtplib.html
51.86
KB
-rw-r--r--
sndhdr.html
12.05
KB
-rw-r--r--
socket.html
126.94
KB
-rw-r--r--
socketserver.html
81.38
KB
-rw-r--r--
someos.html
17.09
KB
-rw-r--r--
spwd.html
12.25
KB
-rw-r--r--
sqlite3.html
154.12
KB
-rw-r--r--
ssl.html
214.5
KB
-rw-r--r--
stat.html
41.11
KB
-rw-r--r--
statvfs.html
13.24
KB
-rw-r--r--
stdtypes.html
309.83
KB
-rw-r--r--
string.html
129.58
KB
-rw-r--r--
stringio.html
21.1
KB
-rw-r--r--
stringprep.html
21.4
KB
-rw-r--r--
strings.html
16.42
KB
-rw-r--r--
struct.html
47.68
KB
-rw-r--r--
subprocess.html
117
KB
-rw-r--r--
sun.html
7.83
KB
-rw-r--r--
sunau.html
35.43
KB
-rw-r--r--
sunaudio.html
21.05
KB
-rw-r--r--
symbol.html
9.06
KB
-rw-r--r--
symtable.html
29.03
KB
-rw-r--r--
sys.html
118.12
KB
-rw-r--r--
sysconfig.html
28.8
KB
-rw-r--r--
syslog.html
21.29
KB
-rw-r--r--
tabnanny.html
12.78
KB
-rw-r--r--
tarfile.html
99.54
KB
-rw-r--r--
telnetlib.html
30.46
KB
-rw-r--r--
tempfile.html
35.02
KB
-rw-r--r--
termios.html
19.22
KB
-rw-r--r--
test.html
61.42
KB
-rw-r--r--
textwrap.html
32.28
KB
-rw-r--r--
thread.html
22.67
KB
-rw-r--r--
threading.html
92.04
KB
-rw-r--r--
time.html
65.55
KB
-rw-r--r--
timeit.html
44.38
KB
-rw-r--r--
tix.html
56.73
KB
-rw-r--r--
tk.html
26.76
KB
-rw-r--r--
tkinter.html
86.67
KB
-rw-r--r--
token.html
27.31
KB
-rw-r--r--
tokenize.html
21.69
KB
-rw-r--r--
trace.html
33.91
KB
-rw-r--r--
traceback.html
44.22
KB
-rw-r--r--
ttk.html
123.83
KB
-rw-r--r--
tty.html
10.95
KB
-rw-r--r--
turtle.html
246.17
KB
-rw-r--r--
types.html
33.66
KB
-rw-r--r--
undoc.html
25.54
KB
-rw-r--r--
unicodedata.html
22.64
KB
-rw-r--r--
unittest.html
246.75
KB
-rw-r--r--
unix.html
11.9
KB
-rw-r--r--
urllib.html
71.61
KB
-rw-r--r--
urllib2.html
128.77
KB
-rw-r--r--
urlparse.html
49.04
KB
-rw-r--r--
user.html
13.41
KB
-rw-r--r--
userdict.html
32.96
KB
-rw-r--r--
uu.html
13.25
KB
-rw-r--r--
uuid.html
33.55
KB
-rw-r--r--
warnings.html
51.86
KB
-rw-r--r--
wave.html
29.08
KB
-rw-r--r--
weakref.html
41.14
KB
-rw-r--r--
webbrowser.html
29.53
KB
-rw-r--r--
whichdb.html
10.44
KB
-rw-r--r--
windows.html
10.37
KB
-rw-r--r--
winsound.html
22.56
KB
-rw-r--r--
wsgiref.html
94.38
KB
-rw-r--r--
xdrlib.html
38.05
KB
-rw-r--r--
xml.dom.html
110.39
KB
-rw-r--r--
xml.dom.minidom.html
45.23
KB
-rw-r--r--
xml.dom.pulldom.html
16.32
KB
-rw-r--r--
xml.etree.elementtree.html
124.2
KB
-rw-r--r--
xml.html
18.76
KB
-rw-r--r--
xml.sax.handler.html
47.5
KB
-rw-r--r--
xml.sax.html
26.04
KB
-rw-r--r--
xml.sax.reader.html
51.4
KB
-rw-r--r--
xml.sax.utils.html
18.11
KB
-rw-r--r--
xmlrpclib.html
71.79
KB
-rw-r--r--
zipfile.html
67.26
KB
-rw-r--r--
zipimport.html
24.32
KB
-rw-r--r--
zlib.html
34.41
KB
-rw-r--r--
Delete
Unzip
Zip
${this.title}
Close
Code Editor : bz2.html
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" /> <title>12.3. bz2 — Compression compatible with bzip2 — Python 2.7.18 documentation</title> <link rel="stylesheet" type="text/css" href="../_static/pygments.css" /> <link rel="stylesheet" type="text/css" href="../_static/classic.css" /> <script data-url_root="../" id="documentation_options" src="../_static/documentation_options.js"></script> <script src="../_static/jquery.js"></script> <script src="../_static/underscore.js"></script> <script src="../_static/doctools.js"></script> <script src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 2.7.18 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="next" title="12.4. zipfile — Work with ZIP archives" href="zipfile.html" /> <link rel="prev" title="12.2. gzip — Support for gzip files" href="gzip.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="file:///usr/share/doc/python2.7/html/library/bz2.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </head><body> <div id="outdated-warning" style="padding: .5em; text-align: center; background-color: #FFBABA; color: #6A0E0E;"> This document is for an old version of Python that is <a href="https://devguide.python.org/devcycle/#end-of-life-branches">no longer supported</a>. You should install the python3 and python3-doc packages and read the <a href="file:///usr/share/doc/python3-doc/html/library/bz2.html"> Python documentation for the Python3 version packaged in this release</a>. </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="zipfile.html" title="12.4. zipfile — Work with ZIP archives" accesskey="N">next</a> |</li> <li class="right" > <a href="gzip.html" title="12.2. gzip — Support for gzip files" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.18 documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="nav-item nav-item-2"><a href="archiving.html" accesskey="U"><span class="section-number">12. </span>Data Compression and Archiving</a> »</li> <li class="nav-item nav-item-this"><a href=""><span class="section-number">12.3. </span><code class="xref py py-mod docutils literal notranslate"><span class="pre">bz2</span></code> — Compression compatible with <strong class="program">bzip2</strong></a></li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <section id="module-bz2"> <span id="bz2-compression-compatible-with-bzip2"></span><h1><span class="section-number">12.3. </span><a class="reference internal" href="#module-bz2" title="bz2: Interface to compression and decompression routines compatible with bzip2."><code class="xref py py-mod docutils literal notranslate"><span class="pre">bz2</span></code></a> — Compression compatible with <strong class="program">bzip2</strong><a class="headerlink" href="#module-bz2" title="Permalink to this headline">¶</a></h1> <div class="versionadded"> <p><span class="versionmodified added">New in version 2.3.</span></p> </div> <p>This module provides a comprehensive interface for the bz2 compression library. It implements a complete file interface, one-shot (de)compression functions, and types for sequential (de)compression.</p> <p>Here is a summary of the features offered by the bz2 module:</p> <ul class="simple"> <li><p><a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> class implements a complete file interface, including <a class="reference internal" href="#bz2.BZ2File.readline" title="bz2.BZ2File.readline"><code class="xref py py-meth docutils literal notranslate"><span class="pre">readline()</span></code></a>, <a class="reference internal" href="#bz2.BZ2File.readlines" title="bz2.BZ2File.readlines"><code class="xref py py-meth docutils literal notranslate"><span class="pre">readlines()</span></code></a>, <a class="reference internal" href="#bz2.BZ2File.writelines" title="bz2.BZ2File.writelines"><code class="xref py py-meth docutils literal notranslate"><span class="pre">writelines()</span></code></a>, <a class="reference internal" href="#bz2.BZ2File.seek" title="bz2.BZ2File.seek"><code class="xref py py-meth docutils literal notranslate"><span class="pre">seek()</span></code></a>, etc;</p></li> <li><p><a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> class implements emulated <a class="reference internal" href="#bz2.BZ2File.seek" title="bz2.BZ2File.seek"><code class="xref py py-meth docutils literal notranslate"><span class="pre">seek()</span></code></a> support;</p></li> <li><p><a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> class implements universal newline support;</p></li> <li><p><a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> class offers an optimized line iteration using the readahead algorithm borrowed from file objects;</p></li> <li><p>Sequential (de)compression supported by <a class="reference internal" href="#bz2.BZ2Compressor" title="bz2.BZ2Compressor"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2Compressor</span></code></a> and <a class="reference internal" href="#bz2.BZ2Decompressor" title="bz2.BZ2Decompressor"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2Decompressor</span></code></a> classes;</p></li> <li><p>One-shot (de)compression supported by <a class="reference internal" href="#bz2.compress" title="bz2.compress"><code class="xref py py-func docutils literal notranslate"><span class="pre">compress()</span></code></a> and <a class="reference internal" href="#bz2.decompress" title="bz2.decompress"><code class="xref py py-func docutils literal notranslate"><span class="pre">decompress()</span></code></a> functions;</p></li> <li><p>Thread safety uses individual locking mechanism.</p></li> </ul> <div class="admonition note"> <p class="admonition-title">Note</p> <p>Handling of multi-stream bzip2 files is not supported. Modules such as <a class="reference external" href="https://github.com/nvawda/bz2file">bz2file</a> let you overcome this.</p> </div> <section id="de-compression-of-files"> <h2><span class="section-number">12.3.1. </span>(De)compression of files<a class="headerlink" href="#de-compression-of-files" title="Permalink to this headline">¶</a></h2> <p>Handling of compressed files is offered by the <a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> class.</p> <span class="target" id="index-0"></span><dl class="py class"> <dt class="sig sig-object py" id="bz2.BZ2File"> <em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">bz2.</span></span><span class="sig-name descname"><span class="pre">BZ2File</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">filename</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">mode</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">buffering</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">compresslevel</span></span></em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File" title="Permalink to this definition">¶</a></dt> <dd><p>Open a bz2 file. Mode can be either <code class="docutils literal notranslate"><span class="pre">'r'</span></code> or <code class="docutils literal notranslate"><span class="pre">'w'</span></code>, for reading (default) or writing. When opened for writing, the file will be created if it doesn’t exist, and truncated otherwise. If <em>buffering</em> is given, <code class="docutils literal notranslate"><span class="pre">0</span></code> means unbuffered, and larger numbers specify the buffer size; the default is <code class="docutils literal notranslate"><span class="pre">0</span></code>. If <em>compresslevel</em> is given, it must be a number between <code class="docutils literal notranslate"><span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">9</span></code>; the default is <code class="docutils literal notranslate"><span class="pre">9</span></code>. Add a <code class="docutils literal notranslate"><span class="pre">'U'</span></code> to mode to open the file for input in <a class="reference internal" href="../glossary.html#term-universal-newlines"><span class="xref std std-term">universal newlines</span></a> mode. Any line ending in the input file will be seen as a <code class="docutils literal notranslate"><span class="pre">'\n'</span></code> in Python. Also, a file so opened gains the attribute <code class="xref py py-attr docutils literal notranslate"><span class="pre">newlines</span></code>; the value for this attribute is one of <code class="docutils literal notranslate"><span class="pre">None</span></code> (no newline read yet), <code class="docutils literal notranslate"><span class="pre">'\r'</span></code>, <code class="docutils literal notranslate"><span class="pre">'\n'</span></code>, <code class="docutils literal notranslate"><span class="pre">'\r\n'</span></code> or a tuple containing all the newline types seen. Universal newlines are available only when reading. Instances support iteration in the same way as normal <a class="reference internal" href="functions.html#file" title="file"><code class="xref py py-class docutils literal notranslate"><span class="pre">file</span></code></a> instances.</p> <p><a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> supports the <a class="reference internal" href="../reference/compound_stmts.html#with"><code class="xref std std-keyword docutils literal notranslate"><span class="pre">with</span></code></a> statement.</p> <div class="versionchanged"> <p><span class="versionmodified changed">Changed in version 2.7: </span>Support for the <a class="reference internal" href="../reference/compound_stmts.html#with"><code class="xref std std-keyword docutils literal notranslate"><span class="pre">with</span></code></a> statement was added.</p> </div> <div class="admonition note"> <p class="admonition-title">Note</p> <p>This class does not support input files containing multiple streams (such as those produced by the <strong class="program">pbzip2</strong> tool). When reading such an input file, only the first stream will be accessible. If you require support for multi-stream files, consider using the third-party <code class="xref py py-mod docutils literal notranslate"><span class="pre">bz2file</span></code> module (available from <a class="reference external" href="https://pypi.org/project/bz2file">PyPI</a>). This module provides a backport of Python 3.3’s <a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> class, which does support multi-stream files.</p> </div> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.close"> <span class="sig-name descname"><span class="pre">close</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.close" title="Permalink to this definition">¶</a></dt> <dd><p>Close the file. Sets data attribute <code class="xref py py-attr docutils literal notranslate"><span class="pre">closed</span></code> to true. A closed file cannot be used for further I/O operations. <a class="reference internal" href="#bz2.BZ2File.close" title="bz2.BZ2File.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">close()</span></code></a> may be called more than once without error.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.read"> <span class="sig-name descname"><span class="pre">read</span></span><span class="sig-paren">(</span><span class="optional">[</span><em class="sig-param"><span class="n"><span class="pre">size</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.read" title="Permalink to this definition">¶</a></dt> <dd><p>Read at most <em>size</em> uncompressed bytes, returned as a string. If the <em>size</em> argument is negative or omitted, read until EOF is reached.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.readline"> <span class="sig-name descname"><span class="pre">readline</span></span><span class="sig-paren">(</span><span class="optional">[</span><em class="sig-param"><span class="n"><span class="pre">size</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.readline" title="Permalink to this definition">¶</a></dt> <dd><p>Return the next line from the file, as a string, retaining newline. A non-negative <em>size</em> argument limits the maximum number of bytes to return (an incomplete line may be returned then). Return an empty string at EOF.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.readlines"> <span class="sig-name descname"><span class="pre">readlines</span></span><span class="sig-paren">(</span><span class="optional">[</span><em class="sig-param"><span class="n"><span class="pre">size</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.readlines" title="Permalink to this definition">¶</a></dt> <dd><p>Return a list of lines read. The optional <em>size</em> argument, if given, is an approximate bound on the total number of bytes in the lines returned.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.xreadlines"> <span class="sig-name descname"><span class="pre">xreadlines</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.xreadlines" title="Permalink to this definition">¶</a></dt> <dd><p>For backward compatibility. <a class="reference internal" href="#bz2.BZ2File" title="bz2.BZ2File"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2File</span></code></a> objects now include the performance optimizations previously implemented in the <code class="xref py py-mod docutils literal notranslate"><span class="pre">xreadlines</span></code> module.</p> <div class="deprecated"> <p><span class="versionmodified deprecated">Deprecated since version 2.3: </span>This exists only for compatibility with the method by this name on <a class="reference internal" href="functions.html#file" title="file"><code class="xref py py-class docutils literal notranslate"><span class="pre">file</span></code></a> objects, which is deprecated. Use <code class="docutils literal notranslate"><span class="pre">for</span> <span class="pre">line</span> <span class="pre">in</span> <span class="pre">file</span></code> instead.</p> </div> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.seek"> <span class="sig-name descname"><span class="pre">seek</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">offset</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">whence</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.seek" title="Permalink to this definition">¶</a></dt> <dd><p>Move to new file position. Argument <em>offset</em> is a byte count. Optional argument <em>whence</em> defaults to <code class="docutils literal notranslate"><span class="pre">os.SEEK_SET</span></code> or <code class="docutils literal notranslate"><span class="pre">0</span></code> (offset from start of file; offset should be <code class="docutils literal notranslate"><span class="pre">>=</span> <span class="pre">0</span></code>); other values are <code class="docutils literal notranslate"><span class="pre">os.SEEK_CUR</span></code> or <code class="docutils literal notranslate"><span class="pre">1</span></code> (move relative to current position; offset can be positive or negative), and <code class="docutils literal notranslate"><span class="pre">os.SEEK_END</span></code> or <code class="docutils literal notranslate"><span class="pre">2</span></code> (move relative to end of file; offset is usually negative, although many platforms allow seeking beyond the end of a file).</p> <p>Note that seeking of bz2 files is emulated, and depending on the parameters the operation may be extremely slow.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.tell"> <span class="sig-name descname"><span class="pre">tell</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.tell" title="Permalink to this definition">¶</a></dt> <dd><p>Return the current file position, an integer (may be a long integer).</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.write"> <span class="sig-name descname"><span class="pre">write</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.write" title="Permalink to this definition">¶</a></dt> <dd><p>Write string <em>data</em> to file. Note that due to buffering, <a class="reference internal" href="#bz2.BZ2File.close" title="bz2.BZ2File.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">close()</span></code></a> may be needed before the file on disk reflects the data written.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2File.writelines"> <span class="sig-name descname"><span class="pre">writelines</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">sequence_of_strings</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2File.writelines" title="Permalink to this definition">¶</a></dt> <dd><p>Write the sequence of strings to the file. Note that newlines are not added. The sequence can be any iterable object producing strings. This is equivalent to calling write() for each string.</p> </dd></dl> </dd></dl> </section> <section id="sequential-de-compression"> <h2><span class="section-number">12.3.2. </span>Sequential (de)compression<a class="headerlink" href="#sequential-de-compression" title="Permalink to this headline">¶</a></h2> <p>Sequential compression and decompression is done using the classes <a class="reference internal" href="#bz2.BZ2Compressor" title="bz2.BZ2Compressor"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2Compressor</span></code></a> and <a class="reference internal" href="#bz2.BZ2Decompressor" title="bz2.BZ2Decompressor"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2Decompressor</span></code></a>.</p> <dl class="py class"> <dt class="sig sig-object py" id="bz2.BZ2Compressor"> <em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">bz2.</span></span><span class="sig-name descname"><span class="pre">BZ2Compressor</span></span><span class="sig-paren">(</span><span class="optional">[</span><em class="sig-param"><span class="n"><span class="pre">compresslevel</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2Compressor" title="Permalink to this definition">¶</a></dt> <dd><p>Create a new compressor object. This object may be used to compress data sequentially. If you want to compress data in one shot, use the <a class="reference internal" href="#bz2.compress" title="bz2.compress"><code class="xref py py-func docutils literal notranslate"><span class="pre">compress()</span></code></a> function instead. The <em>compresslevel</em> parameter, if given, must be a number between <code class="docutils literal notranslate"><span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">9</span></code>; the default is <code class="docutils literal notranslate"><span class="pre">9</span></code>.</p> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2Compressor.compress"> <span class="sig-name descname"><span class="pre">compress</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2Compressor.compress" title="Permalink to this definition">¶</a></dt> <dd><p>Provide more data to the compressor object. It will return chunks of compressed data whenever possible. When you’ve finished providing data to compress, call the <a class="reference internal" href="#bz2.BZ2Compressor.flush" title="bz2.BZ2Compressor.flush"><code class="xref py py-meth docutils literal notranslate"><span class="pre">flush()</span></code></a> method to finish the compression process, and return what is left in internal buffers.</p> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2Compressor.flush"> <span class="sig-name descname"><span class="pre">flush</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2Compressor.flush" title="Permalink to this definition">¶</a></dt> <dd><p>Finish the compression process and return what is left in internal buffers. You must not use the compressor object after calling this method.</p> </dd></dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="bz2.BZ2Decompressor"> <em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">bz2.</span></span><span class="sig-name descname"><span class="pre">BZ2Decompressor</span></span><a class="headerlink" href="#bz2.BZ2Decompressor" title="Permalink to this definition">¶</a></dt> <dd><p>Create a new decompressor object. This object may be used to decompress data sequentially. If you want to decompress data in one shot, use the <a class="reference internal" href="#bz2.decompress" title="bz2.decompress"><code class="xref py py-func docutils literal notranslate"><span class="pre">decompress()</span></code></a> function instead.</p> <dl class="py method"> <dt class="sig sig-object py" id="bz2.BZ2Decompressor.decompress"> <span class="sig-name descname"><span class="pre">decompress</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#bz2.BZ2Decompressor.decompress" title="Permalink to this definition">¶</a></dt> <dd><p>Provide more data to the decompressor object. It will return chunks of decompressed data whenever possible. If you try to decompress data after the end of stream is found, <code class="xref py py-exc docutils literal notranslate"><span class="pre">EOFError</span></code> will be raised. If any data was found after the end of stream, it’ll be ignored and saved in <code class="xref py py-attr docutils literal notranslate"><span class="pre">unused_data</span></code> attribute.</p> </dd></dl> </dd></dl> </section> <section id="one-shot-de-compression"> <h2><span class="section-number">12.3.3. </span>One-shot (de)compression<a class="headerlink" href="#one-shot-de-compression" title="Permalink to this headline">¶</a></h2> <p>One-shot compression and decompression is provided through the <a class="reference internal" href="#bz2.compress" title="bz2.compress"><code class="xref py py-func docutils literal notranslate"><span class="pre">compress()</span></code></a> and <a class="reference internal" href="#bz2.decompress" title="bz2.decompress"><code class="xref py py-func docutils literal notranslate"><span class="pre">decompress()</span></code></a> functions.</p> <dl class="py function"> <dt class="sig sig-object py" id="bz2.compress"> <span class="sig-prename descclassname"><span class="pre">bz2.</span></span><span class="sig-name descname"><span class="pre">compress</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="optional">[</span>, <em class="sig-param"><span class="n"><span class="pre">compresslevel</span></span></em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#bz2.compress" title="Permalink to this definition">¶</a></dt> <dd><p>Compress <em>data</em> in one shot. If you want to compress data sequentially, use an instance of <a class="reference internal" href="#bz2.BZ2Compressor" title="bz2.BZ2Compressor"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2Compressor</span></code></a> instead. The <em>compresslevel</em> parameter, if given, must be a number between <code class="docutils literal notranslate"><span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">9</span></code>; the default is <code class="docutils literal notranslate"><span class="pre">9</span></code>.</p> </dd></dl> <dl class="py function"> <dt class="sig sig-object py" id="bz2.decompress"> <span class="sig-prename descclassname"><span class="pre">bz2.</span></span><span class="sig-name descname"><span class="pre">decompress</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">data</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#bz2.decompress" title="Permalink to this definition">¶</a></dt> <dd><p>Decompress <em>data</em> in one shot. If you want to decompress data sequentially, use an instance of <a class="reference internal" href="#bz2.BZ2Decompressor" title="bz2.BZ2Decompressor"><code class="xref py py-class docutils literal notranslate"><span class="pre">BZ2Decompressor</span></code></a> instead.</p> </dd></dl> </section> </section> <div class="clearer"></div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="../contents.html">Table of Contents</a></h3> <ul> <li><a class="reference internal" href="#">12.3. <code class="xref py py-mod docutils literal notranslate"><span class="pre">bz2</span></code> — Compression compatible with <strong class="program">bzip2</strong></a><ul> <li><a class="reference internal" href="#de-compression-of-files">12.3.1. (De)compression of files</a></li> <li><a class="reference internal" href="#sequential-de-compression">12.3.2. Sequential (de)compression</a></li> <li><a class="reference internal" href="#one-shot-de-compression">12.3.3. One-shot (de)compression</a></li> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="gzip.html" title="previous chapter"><span class="section-number">12.2. </span><code class="xref py py-mod docutils literal notranslate"><span class="pre">gzip</span></code> — Support for <strong class="program">gzip</strong> files</a></p> <h4>Next topic</h4> <p class="topless"><a href="zipfile.html" title="next chapter"><span class="section-number">12.4. </span><code class="xref py py-mod docutils literal notranslate"><span class="pre">zipfile</span></code> — Work with ZIP archives</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/library/bz2.rst.txt" rel="nofollow">Show Source</a></li> </ul> </div> <div id="searchbox" style="display: none" role="search"> <h3 id="searchlabel">Quick search</h3> <div class="searchformwrapper"> <form class="search" action="../search.html" method="get"> <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/> <input type="submit" value="Go" /> </form> </div> </div> <script>$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="zipfile.html" title="12.4. zipfile — Work with ZIP archives" >next</a> |</li> <li class="right" > <a href="gzip.html" title="12.2. gzip — Support for gzip files" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.18 documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> <li class="nav-item nav-item-2"><a href="archiving.html" ><span class="section-number">12. </span>Data Compression and Archiving</a> »</li> <li class="nav-item nav-item-this"><a href=""><span class="section-number">12.3. </span><code class="xref py py-mod docutils literal notranslate"><span class="pre">bz2</span></code> — Compression compatible with <strong class="program">bzip2</strong></a></li> </ul> </div> <div class="footer"> © <a href="../copyright.html">Copyright</a> 1990-2024, Python Software Foundation. <br /> The Python Software Foundation is a non-profit corporation. <a href="https://www.python.org/psf/donations/">Please donate.</a> <br /> Last updated on December 09, 2024. <a href="../bugs.html">Found a bug</a>? <br /> Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 4.3.2. </div> </body> </html>
Close