curious about python version numbers
Hi all, I am just curious: if Python3.x is already out, why is 2.7 being released? Are there two main types of Python? Thanks. -- Have a great day, Alex (msg sent from GMail website) mehg...@gmail.com; http://www.facebook.com/mehgcap -- http://mail.python.org/mailman/listinfo/python-list
Re: curious about python version numbers
Hi Alex, It's because Python 3.x introduced a lot of backwards incompatibilities. Python 2.7 aims to bridge that gap, so many 3rd party libraries that depend on Python 2.x can transit onto Python 3.x better, as I understand. Cheers, Xav On Mon, Apr 12, 2010 at 12:52 PM, Alex Hall mehg...@gmail.com wrote: Hi all, I am just curious: if Python3.x is already out, why is 2.7 being released? Are there two main types of Python? Thanks. -- Have a great day, Alex (msg sent from GMail website) mehg...@gmail.com; http://www.facebook.com/mehgcap -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: curious about python version numbers
* Alex Hall: Hi all, I am just curious: if Python3.x is already out, why is 2.7 being released? Are there two main types of Python? Thanks. Old code and old programming habits may work as-is with 2.7 but not with a 3.x implementation. So yes, there are two main extant variants of Python, 2.x and 3.x (and more if you count even earlier versions). 2.7 helps to ease the transition, and provides bug-fixes and better efficiency for the 2.x variant. Cheers hth., - Alf -- http://mail.python.org/mailman/listinfo/python-list
Re: curious about python version numbers
It is like releasing window Xp SP3 even if Vista is out. The problem is we should start using python 3.x but many application like django, twisted had not migrated yet. Hence this stuff to support 2.x . 2.7 is the last 2.x version, no more. On Tue, Apr 13, 2010 at 2:28 PM, Alf P. Steinbach al...@start.no wrote: * Alex Hall: Hi all, I am just curious: if Python3.x is already out, why is 2.7 being released? Are there two main types of Python? Thanks. Old code and old programming habits may work as-is with 2.7 but not with a 3.x implementation. So yes, there are two main extant variants of Python, 2.x and 3.x (and more if you count even earlier versions). 2.7 helps to ease the transition, and provides bug-fixes and better efficiency for the 2.x variant. Cheers hth., - Alf -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: curious about python version numbers
Alex Hall mehg...@gmail.com writes: I am just curious: if Python3.x is already out, why is 2.7 being released? Are there two main types of Python? Python 3.x brings improvements that break backward compatibility: Python 3.0 (a.k.a. Python 3000 or Py3k) is a new version of the language that is incompatible with the 2.x line of releases. The language is mostly the same, but many details, especially how built-in objects like dictionaries and strings work, have changed considerably, and a lot of deprecated features have finally been removed. Also, the standard library has been reorganized in a few prominent places. URL:http://www.python.org/download/releases/3.0/ For that reason, when Python 3.x was being planned, the Python developers committed to supporting Python 2.x with backward-compatible releases for an indeterminate length of time to allow third-party libraries to steadily migrate to Python 3.x so it becomes more attractive to use it for all new development. Python 2.7 has been announced to be the last feature release in the 2.x series: Python 2.7 is scheduled to be the last major version in the 2.x series before it moves into 5 years of bugfix-only mode. URL:http://www.python.org/download/releases/2.7/ -- \ “The Initial Mystery that attends any journey is: how did the | `\ traveller reach his starting point in the first place?” —Louise | _o__) Bogan, _Journey Around My Room_ | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: curious about python version numbers
Thanks, everyone, for the answers! I am still on 2.6 since so many packages rely on it. I got 3.1 at first, but I could not get much to work with it so I installed 2.6 and have only found one package which refuses to work, instead of a lot of them. On 4/13/10, Shashwat Anand anand.shash...@gmail.com wrote: It is like releasing window Xp SP3 even if Vista is out. The problem is we should start using python 3.x but many application like django, twisted had not migrated yet. Hence this stuff to support 2.x . 2.7 is the last 2.x version, no more. On Tue, Apr 13, 2010 at 2:28 PM, Alf P. Steinbach al...@start.no wrote: * Alex Hall: Hi all, I am just curious: if Python3.x is already out, why is 2.7 being released? Are there two main types of Python? Thanks. Old code and old programming habits may work as-is with 2.7 but not with a 3.x implementation. So yes, there are two main extant variants of Python, 2.x and 3.x (and more if you count even earlier versions). 2.7 helps to ease the transition, and provides bug-fixes and better efficiency for the 2.x variant. Cheers hth., - Alf -- http://mail.python.org/mailman/listinfo/python-list -- Have a great day, Alex (msg sent from GMail website) mehg...@gmail.com; http://www.facebook.com/mehgcap -- http://mail.python.org/mailman/listinfo/python-list
Re: curious about python version numbers
On 4/13/2010 9:54 AM, Alex Hall wrote: Thanks, everyone, for the answers! I am still on 2.6 since so many packages rely on it. I got 3.1 at first, but I could not get much to work with it so I installed 2.6 and have only found one package which refuses to work, instead of a lot of them. 2.7, now in beta, is aimed at a June release with 3.2 to follow maybe in Dec. I believe the numpy folks are targeting 3.2. That will enable packages that depend on numpy to do the same. -- http://mail.python.org/mailman/listinfo/python-list
