Release Date: April 9, 2012 Note: A newer bugfix release, Mac os 10.10 release date. 2.7.4, is currently available.Its use is recommended over previous versions of 2.7. Python 2.7.3 was released on April 9, 2012. 2.7.3 includes fixes for several reported security issues in 2.7.2: issue 13703 (oCERT-2011-003, hash collision denial of service), issue 14234 (CVE-2012-0876, hash table collisions CPU usage DoS. Python 3 (released in 2008) is the newest version of Python, and most features have not changed. Most packages have been updated to Python 3 by now (2016). So, if your lab does not have a preference, I recommend using Python 3. There are a couple key differences for novice programmers: In Python 2, you can print with print 42 or print(42). For OSX users, python2.7 comes pre-installed in /usr/bin/ but any python versions that were downloaded and installed by a user are likely in /usr/local/bin/ (see OutOnAWeekend's comment). – David Skarbrevik Oct 12 '18 at 22:10.
Release Date: April 9, 2012
Note: A newer bugfix release, 2.7.4, is currently available. Its use is recommended over previous versionsof 2.7.
Python 2.7.3 was released on April 9, 2012. 2.7.3 includes fixes for severalreported security issues in 2.7.2: issue 13703 (oCERT-2011-003, hashcollision denial of service), issue 14234 (CVE-2012-0876, hash tablecollisions CPU usage DoS in the expat library), issue 14001 (CVE-2012-0845,SimpleXMLRPCServer denial of service), and issue 13885 (CVE-2011-3389,disabling of the CBC IV attack countermeasure in the _ssl module).
The Python 2.7 series is scheduled to be the last major version in the 2.xseries before 2.x moves into an extended maintenance period. The 2.7 seriescontains many of the features that were first released in Python 3.1.Improvements in this release include:
- An ordered dictionary type
- New unittest features including test skipping, new assert methods, and testdiscovery
- A much faster io module
- Automatic numbering of fields in the str.format() method
- Float repr improvements backported from 3.x
- Tile support for Tkinter
- A backport of the memoryview object from 3.x
- Set literals
- Set and dictionary comprehensions
- Dictionary views
- New syntax for nested with statements
- The sysconfig module
See these resources for further information:
- Change log for this release.
- Report bugs at http://bugs.python.org.
- Help fund Python and its community.
This is a production release. Please report any bugsyou encounter.
We currently support these formats for download:
- Mac OS X 64-bit/32-bit x86-64/i386 Installer (2.7.3) for Mac OS X 10.6 and 10.7(sig).[You may need an updated Tcl/Tk install to run IDLE or use Tkinter,see note 2 for instructions.]
- Mac OS X 32-bit i386/PPC Installer (2.7.3) for Mac OS X 10.3 through 10.6(sig).
The source tarballs are signed with Benjamin Peterson's key (fingerprint: 12EF3DC3 8047 DA38 2D18 A5B9 99CD EA9D A413 5B38). The Windows installer was signedby Martin von Löwis' public key, which has a key id of 7D9DC8D2. The Macinstallers were signed with Ned Deily's key, which has a key id of 6F5E1540.The public keys are located on the download page.
MD5 checksums and sizes of the released files:
|||(1, 2) The binaries for AMD64 will also work on processors that implement the Intel 64 architecture (formerly EM64T), i.e. the architecture that Microsoft calls x64, and AMD called x86-64 before calling it AMD64. They will not work on Intel Itanium Processors (formerly IA-64).|
|||(1, 2) There is important information about IDLE, Tkinter, and Tcl/Tk on Mac OSX here. Also, on Mac OS X 10.6, if you need tobuild C extension modules with the 32-bit-only Python installed, you willneed Apple Xcode 3, not 4. The 64-bit/32-bit Python can use eitherXcode 3 or Xcode 4.|
|Version||Operating System||Description||MD5 Sum||File Size||GPG|
|bzip2 compressed source tarball||Source release||c57477edd6d18bd9eeca2f21add73919||11793433||SIG|
|Gzipped source tarball||Source release||ba854a72c9c0ca671b99a36e070d78e0||63682560||SIG|
|XZ compressed source tarball||Source release||62c4c1699170078c469f79ddfed21bc0||9976088||SIG|
|Mac OS X 32-bit i386/PPC installer||Mac OS X||for Mac OS X 10.3 and later||80461c3c60fae64122b51eb20341b453||22178854||SIG|
|Mac OS X 64-bit/32-bit installer||Mac OS X||for Mac OS X 10.6 and later||15c434a11abe7ea5575ef451cfd60f67||18761950||SIG|
|Windows debug information files||Windows||008a63d89d67d41801a55ea341a34676||16221250||SIG|
|Windows help file||Windows||9401a5f847b0c1078a4c68dccf6cd38a||5898853||SIG|
|Windows x86-64 MSI installer||Windows||for AMD64/EM64T/x64||d11d4aeb7e5425bf28f28ab1c7452886||16420864||SIG|
|Windows x86 MSI installer||Windows||c846d7a5ed186707d3675564a9838cc2||15867904||SIG|
CANVAS depends on the following (free) software packages to run:
- Python 2.6 or 2.7
- PyCrypto (some modules)
- Py-GTK and its associated libraries
- CANVAS STRATEGIC: ZeroMQ/PyZMQ
Linux users will need to fetch the following packages for their architecture and version of python. Certain distros may have to compile the dependencies from source if a package is not available.
Note: Package downloads are available from your package management tool of choice: yum, rpm, apt-get, emerge, etc
- Python25, Python26 or Python27
Distribution specific instructions
Ubuntu 18.04, 17.10, 16.10, 16.04
Mac Update Python To 3.8
- sudo apt-get update
sudo apt-get -y install python-pip
sudo apt-get -y install gtk2.0
sudo apt-get -y install python-glade2
sudo apt-get -y install python-nacl python-bcrypt
sudo pip install pycrypto
sudo pip install pyasn1
sudo pip install asn1tools
Windows users can download our new dependency installer that will download and setup every required dependency needed to run CANVAS (including python 2.7 if selected).
Mac Update Python To 3.7
Mac OS X Users
Osx Update Python
OSX users can download an installer with most dependencies for that platform from Immunity. You can then download CANVAS as a zip/tar file that you decompress and run CANVAS_ROOT/runcanvas.sh. Please note you would still need to install pyasn1, pycrypto, pynacl, bcrypt and asn1tools on your own.
Osx Update Python 2.7 To 3