This release brings months of slow but steady development, and will be the last before a major restructuring and cleanup of IPython’s internals that is already under way. For this reason, we hope that 0.10 will be a stable and robust release so that while users adapt to some of the API changes that will come with the refactoring that will become IPython 0.11, they can safely use 0.10 in all existing projects with minimal changes (if any).
IPython 0.10 is now a medium-sized project, with roughly (as reported by David Wheeler’s sloccount utility) 40750 lines of Python code, and a diff between 0.9.1 and this release that contains almost 28000 lines of code and documentation. Our documentation, in PDF format, is a 495-page long PDF document (also available in HTML format, both generated from the same sources).
Many users and developers contributed code, features, bug reports and ideas to this release. Please do not hesitate in contacting us if we’ve failed to acknowledge your contribution here. In particular, for this release we have contribution from the following people, a mix of new and regular names (in alphabetical order by first name):
Below we give an overview of new features, bug fixes and backwards-incompatible changes. For a detailed account of every change made, feel free to view the project log with bzr log.
New %paste magic automatically extracts current contents of clipboard and pastes it directly, while correctly handling code that is indented or prepended with >>> or ... python prompt markers. A very useful new feature contributed by Robert Kern.
IPython ‘demos’, created with the IPython.demo module, can now be created from files on disk or strings in memory. Other fixes and improvements to the demo system, by Tom Fetherston.
Added find_cmd() function to IPython.platutils module, to find commands in a cross-platform manner.
Many improvements and fixes to Gaël Varoquaux’s ipythonx, a WX-based lightweight IPython instance that can be easily embedded in other WX applications. These improvements have made it possible to now have an embedded IPython in Mayavi and other tools.
MultiengineClient objects now have a benchmark() method.
The manual now includes a full set of auto-generated API documents from the code sources, using Sphinx and some of our own support code. We are now using the Numpy Documentation Standard for all docstrings, and we have tried to update as many existing ones as possible to this format.
The new IPython.Extensions.ipy_pretty extension by Robert Kern provides configurable pretty-printing.
Many improvements to the ipython-wx standalone WX-based IPython application by Laurent Dufréchou. It can optionally run in a thread, and this can be toggled at runtime (allowing the loading of Matplotlib in a running session without ill effects).
IPython includes a copy of Steven Bethard’s argparse in the IPython.external package, so we can use it internally and it is also available to any IPython user. By installing it in this manner, we ensure zero conflicts with any system-wide installation you may already have while minimizing external dependencies for new users. In IPython 0.10, We ship argparse version 1.0.
An improved and much more robust test suite, that runs groups of tests in separate subprocesses using either Nose or Twisted’s trial runner to ensure proper management of Twisted-using code. The test suite degrades gracefully if optional dependencies are not available, so that the iptest command can be run with only Nose installed and nothing else. We also have more and cleaner test decorators to better select tests depending on runtime conditions, do setup/teardown, etc.
The new ipcluster now has a fully working ssh mode that should work on Linux, Unix and OS X. Thanks to Vishal Vatsa for implementing this!
The wonderful TextMate editor can now be used with %edit on OS X. Thanks to Matt Foster for this patch.
The documentation regarding parallel uses of IPython, including MPI and PBS, has been significantly updated and improved.
The developer guidelines in the documentation have been updated to explain our workflow using bzr and Launchpad.
Fully refactored ipcluster command line program for starting IPython clusters. This new version is a complete rewrite and 1) is fully cross platform (we now use Twisted’s process management), 2) has much improved performance, 3) uses subcommands for different types of clusters, 4) uses argparse for parsing command line options, 5) has better support for starting clusters using mpirun, 6) has experimental support for starting engines using PBS. It can also reuse FURL files, by appropriately passing options to its subcommands. However, this new version of ipcluster should be considered a technology preview. We plan on changing the API in significant ways before it is final.
Full description of the security model added to the docs.
cd completer: show bookmarks if no other completions are available.
sh profile: easy way to give ‘title’ to prompt: assign to variable ‘_prompt_title’. It looks like this:
[~]|1> _prompt_title = 'sudo!' sudo![~]|2>
%edit: If you do ‘%edit pasted_block’, pasted_block variable gets updated with new data (so repeated editing makes sense)
ipykit and related files were unmaintained and have been removed.
The IPython.genutils.doctest_reload() does not actually call reload(doctest) anymore, as this was causing many problems with the test suite. It still resets doctest.master to None.
While we have not deliberately broken Python 2.4 compatibility, only minor testing was done with Python 2.4, while 2.5 and 2.6 were fully tested. But if you encounter problems with 2.4, please do report them as bugs.
The ipcluster now requires a mode argument; for example to start a cluster on the local machine with 4 engines, you must now type:
$ ipcluster local -n 4
The controller now has a -r flag that needs to be used if you want to reuse existing furl files. Otherwise they are deleted (the default).
Remove ipy_leo.py. You can use easy_install ipython-extension to get it. (done to decouple it from ipython release cycle)
This release was quickly made to restore compatibility with Python 2.4, which version 0.9 accidentally broke. No new features were introduced, other than some additional testing support for internal use.
This was a quick release to fix an unfortunate bug that slipped into the 0.8.3 release. The --twisted option was disabled, as it turned out to be broken across several platforms.
Changes in earlier releases of IPython are described in the older file ChangeLog. Please refer to this document for details.