You can see all the PR marked for the 5.6. milestone , and all the backport versions .

You can see all the PR marked for the 5.5. milestone , and all the backport versions .

IPython 5.4-LTS is the first release of IPython after the release of the 6.x series which is Python 3 only. It backports most of the new exposed API additions made in IPython 6.0 and 6.1 and avoid having to write conditional logics depending of the version of IPython.

Please upgrade to pip 9 or greater before upgrading IPython. Failing to do so on Python 2 may lead to a broken IPython install.

Configurable TerminalInteractiveShell¶ Backported from the 6.x branch as an exceptional new feature. See PR #10373 and #10364 IPython gained a new c.TerminalIPythonApp.interactive_shell_class option that allow to customize the class used to start the terminal frontend. This should allow user to use custom interfaces, like reviving the former readline interface which is now a separate package not maintained by the core team.

Define _repr_mimebundle_ ¶ Object can now define _repr_mimebundle_ in place of multiple _repr_*_ methods and return a full mimebundle. This greatly simplify many implementation and allow to publish custom mimetypes (like geojson, plotly, dataframes….). See the Custom Display Logic example notebook for more information.

Execution Heuristics¶ The heuristic for execution in the command line interface is now more biased toward executing for single statement. While in IPython 4.x and before a single line would be executed when enter is pressed, IPython 5.x would insert a new line. For single line statement this is not true anymore and if a single line is valid Python, IPython will execute it regardless of the cursor position. Use Ctrl-O to insert a new line. PR #10489

Implement Display IDs¶ Implement display id and ability to update a given display. This should greatly simplify a lot of code by removing the need for widgets and allow other frontend to implement things like progress-bars. See PR #10048

Display function¶ The display() function is now available by default in an IPython session, meaning users can call it on any object to see their rich representation. This should allow for better interactivity both at the REPL and in notebook environment. Scripts and library that rely on display and may be run outside of IPython still need to import the display function using from IPython.display import display . See PR #10596