uu and the uu encoding

The uu module provides
uuencode format, an outdated binary encoding format for electronic mail from 1980. The uu
format has been modified by MIME. The uu codec is equipped by the binascii
module. There’s additionally encodings/uu_codec.py which is a codec for the
same encoding; it will hang to aloof additionally be deprecated.

xdrlib

The xdrlib module helps
the Solar Exterior Files Representation Long-established. XDR is an outdated binary
serialization format from 1987. In the intervening time it’s rarely feeble open air
truly supreme domains relish NFS.

aifc

The aifc module provides
make stronger for reading and writing AIFF and AIFF-C files. The Audio Interchange
File Structure is an outdated audio format from 1988 in accordance with Amiga IFF. It used to be most
typically feeble on the Apple Macintosh. In the intervening time totally few truly supreme
utility exhaust AIFF.

A user disclosed [6] that the put up manufacturing movie industry makes heavy
exhaust of the AIFC file format. The usage of the aifc module in closed supply
and inner application used to be unknown ahead of the fundamental posting of this PEP. This
is known as a compelling argument to care for up the aifc module within the accepted
library. The file format is acquire and the module does no longer require mighty
upkeep. The strategic advantages for Python can also just outmatch the burden.

audioop

The audioop module
incorporates helper capabilities to manipulate uncooked audio files and adaptive
differential pulse-code modulated audio files. The module is implemented in
C without any further dependencies. The aifc, sunau, and wave
modules rely on audioop for some operations.

The byteswap operation within the wave module can also just additionally be substituted with little
further work. In case aifc is no longer deprecated as neatly, a diminished version of
the audioop module is converted into a non-public implementation detail,
e.g. _audioop with byteswap, alaw2lin, ulaw2lin, lin2alaw,
lin2ulaw, and lin2adpcm.

chunk

The chunk module provides
make stronger for reading and writing Electronic Arts’ Interchange File Structure.
IFF is an outdated audio file format within the muse launched for Commodore and
Amiga. The format is no longer associated.

imghdr

The imghdr module is a
easy tool to bet the describe file format from the fundamental 32 bytes
of a file or buffer. It helps totally a little collection of codecs and
neither returns resolution nor coloration depth.

ossaudiodev

The ossaudiodev
module provides make stronger for Launch Sound Procedure, an interface to sound
playback and obtain devices. OSS used to be at the muse free application, but later
make stronger for newer sound devices and enhancements had been proprietary. Linux
community abandoned OSS in want of ALSA [1]. Some working programs relish
OpenBSD and NetBSD present an incomplete [2] emulation of OSS.

To totally of my files, FreeBSD is the totally standard working system
that makes exhaust of Launch Sound Procedure as of this day. The ossaudiodev hasn’t seen any
improvements or fresh aspects since 2003. All commits since 2003 are
challenge-extensive code cleanups and a couple of worm fixes. It’d be priceless
for both FreeBSD community and core constructing, if the module may perchance perchance well presumably be
maintained and dispensed by of us who love it and exhaust it.

The accepted library feeble to hang extra audio-associated modules. The replace
audio application interfaces (audiodev, linuxaudiodev, sunaudiodev)
had been removed in 2007 as section of the PEP 3108 stdlib re-group.

sndhdr

The sndhdr module is
equivalent to the imghdr module but for audio codecs. It guesses file
format, channels, frame rate, and sample widths from the fundamental 512 bytes of
a file or buffer. The module totally helps AU, AIFF, HCOM, VOC, WAV, and
other extinct codecs.

sunau

The sunau module provides
make stronger for Solar AU sound format. It’s but one other outdated, oldschool file format.

asynchat

The asynchat module
is constructed on high of asyncore and has been deprecated since Python 3.6.

asyncore

The asyncore module used to be
the fundamental module for asynchronous socket service customers and servers. It
has been modified by asyncio and is deprecated since Python 3.6.

The asyncore module is additionally feeble in stdlib checks. The checks for
ftplib, logging, smptd, smtplib, and ssl are partly
in accordance with asyncore. These checks needs to be up up to now to exhaust asyncio or
threading.

cgi

The cgi module is a make stronger
module for General Gateway Interface (CGI) scripts. CGI is deemed as
inefficient because every incoming set up a question to is handled in a brand fresh direction of.
PEP 206 considers the module as:

“[…] designed poorly and are now shut to-no longer attainable to repair (cgi) […]”

Replacements for the a gargantuan collection of substances of cgi which may perchance be no longer straight
associated to executing code are:

• parse with urllib.parse.parse_qs (parse is supreme a wrapper)
• parse_header with electronic mail.message.Message (survey example below)
• parse_multipart with electronic mail.message.Message (same MIME RFCs)
• FieldStorage/MiniFieldStorage has no direct replace, but can
  on the entire be modified by the usage of multipart (for POST and PUT
  requests) or urllib.parse.parse_qsl (for GET and HEAD
  requests)
• valid_boundary (undocumented) with re.collect("^[ -~]{0,200}[!-~]$")

As an yell example of how shut parse_header and
electronic mail.message.Message are:

>>> from cgi import parse_header
>>> from electronic mail.message import Message
>>> parse_header(h)
('utility/json', {'charset': 'utf8'})
>>> m = Message()
>>> m['content-type'] = h
>>> m.get_params()
[('application/json', ''), ('charset', 'utf8')]
>>> m.get_param('charset')
'utf8'

cgitb

The cgitb module is a
helper for the cgi module for configurable tracebacks.

The cgitb module is no longer feeble by any fundamental Python net framework (Django,
Pyramid, Plone, Flask, CherryPy, or Bottle). Handiest Paste makes exhaust of it in an
elective debugging middleware.

smtpd

The smtpd module provides
a truly easy implementation of a SMTP mail server. The module documentation
marks the module as deprecated and recommends aiosmtpd as a replace. The
deprecation message used to be added in releases 3.4.7, 3.5.4, and 3.6.1.

nntplib

The nntplib module
implements the consumer facet of the Network Data Switch Protocol (nntp). Data
groups feeble to be a dominant platform for on-line discussions. Over the final
twenty years, files has been slowly but progressively modified with mailing lists
and net-essentially based totally dialogue platforms. Twisted is additionally
planning to deprecate NNTP
make stronger and pynntp hasn’t seen any
impart since 2014. That is a legitimate indicator that the public passion in
NNTP make stronger is declining.

The nntplib checks had been the design within the encourage of further work within the most modern
past. Python totally incorporates the consumer facet of NNTP, so the checks hook up with
exterior files servers. The servers are typically unavailable, too slack, or produce
no longer work accurately over IPv6. The venture causes flaky take a look at runs on
buildbots.

telnetlib

The telnetlib module
provides a Telnet class that implements the Telnet protocol.

crypt

The crypt module implements
password hashing in accordance with the crypt(3) aim from libcrypt or
libxcrypt on Unix-relish platforms. The algorithms are largely outdated, of sad
good and timid. Customers are heart-broken from the usage of them.

• The module is no longer on hand on Dwelling windows. Corrupt-platform applications need
  some other implementation anyway.
• Handiest DES encryption is assured to be on hand. DES has an especially
  little key intention of 256.
• MD5, salted SHA256, salted SHA512, and Blowfish are elective extensions.
  SSHA256 and SSHA512 are glibc extensions. Blowfish (bcrypt) is the totally
  algorithm that is aloof acquire. Then all once more it’s in glibc and therefore no longer
  typically on hand on Linux.
• Reckoning on the platform, the crypt module is no longer thread acquire. Handiest
  implementations with crypt_r(3) are thread acquire.
• The module used to be by no draw priceless to engage with system user and password
  databases. On BSD, macOS, and Linux, all user authentication and
  password modification operations need to plow thru PAM (pluggable
  authentication module); survey the spwd deprecation.

nis

The nis module provides
NIS/YP make stronger. Network Files Service / Yellow Pages is an outdated and
deprecated itemizing service protocol developed by Solar Microsystems. Its
designed successor NIS+ from 1992 by no draw took off. For a truly very lengthy time, libc’s
Name Service Swap, LDAP, and Kerberos/GSSAPI had been view a couple of extra essential
and further acquire replace for NIS.

spwd

The spwd module provides
direct obtain admission to to Unix shadow password database the usage of non-accepted APIs.

In classic, it’s a accelerate belief to exhaust spwd. It circumvents system
security insurance policies, does no longer exhaust the PAM stack, and is totally relish minded
with native user accounts, because it ignores NSS. The exhaust of the spwd
module for obtain admission to care for an eye on needs to be view a couple of security worm, as it bypasses
PAM’s obtain admission to care for an eye on.

Moreover, the spwd module makes exhaust of the
shadow(3) APIs.
Functions relish getspnam(3) obtain admission to the /and plenty of others/shadow file straight. This
is bad and even forbidden for confined services on programs with a
security engine relish SELinux or AppArmor.

msilib

The msilib equipment is a
Dwelling windows-totally equipment. It helps the creation of Microsoft Installers (MSI).
The equipment additionally exposes further APIs to create cabinet files (CAB). The
module is feeble to facilitate distutils to create MSI installers with the
bdist_msi clarify. Previously it used to be feeble to create CPython’s legitimate
Dwelling windows installer, too.

Microsoft is slowly transferring away from MSI in want of Dwelling windows 10 Apps (AppX)
as a brand fresh deployment model [3].

pipes

The pipes module provides
helpers to pipe the input of 1 clarify into the output of 1 other clarify.
The module is constructed on high of os.popen. Customers are impressed to exhaust
the subprocess module as a replace.