|Author:||A.M. Kuchling (amk at amk.ca)|
|Date:||February 14, 2009|
This article explains the new features in Python 2.7. No release schedule has been decided yet for 2.7.
Some smaller changes made to the core Python language are:
To be written.
As in every release, Python’s standard library received a number of enhancements and bug fixes. Here’s a partial list of the most notable changes, sorted alphabetically by module name. Consult the Misc/NEWS file in the source tree for a more complete list of changes, or look through the Subversion logs for all the details.
A new function in the subprocess module, check_output(), runs a command with a specified set of arguments and returns the command’s output as a string if the command runs without error, or raises a CalledProcessError exception otherwise.
>>> subprocess.check_output(['df', '-h', '.']) 'Filesystem Size Used Avail Capacity Mounted on\n /dev/disk0s2 52G 49G 3.0G 94% /\n' >>> subprocess.check_output(['df', '-h', '/bogus']) ... subprocess.CalledProcessError: Command '['df', '-h', '/bogus']' returned non-zero exit status 1
(Contributed by Gregory P. Smith.)
Tcl/Tk 8.5 includes a set of themed widgets that re-implement basic Tk widgets but have a more customizable appearance and can therefore more closely resemble the native platform’s widgets. This widget set was originally called Tile, but was renamed to Ttk (for “themed Tk”) on being added to Tcl/Tck release 8.5.
XXX write a brief discussion and an example here.
The ttk module was written by Guilherme Polo and added in issue 2983. An alternate version called Tile.py, written by Martin Franklin and maintained by Kevin Walzer, was proposed for inclusion in issue 2618, but the authors argued that Guilherme Polo’s work was more comprehensive.
Changes to Python’s build process and to the C API include:
This section lists previously described changes and other bugfixes that may require changes to your code:
To be written.
The author would like to thank the following people for offering suggestions, corrections and assistance with various drafts of this article: no one yet.