[IPython-dev] (no subject)

Jed Ludlow jed.ludlow@gmail....
Fri Dec 21 17:20:22 CST 2012


Hi.

Quick question from the Spyder project. I'm working on some debugging
related features, and I can't quite figure out the right way to communicate
with IPython during debugging.

As background, Spyder can launch instances of IPythonQtConsoleApp in the
IDE which make use of RichIPythonWidget. These get associated with an
IPython kernel instance. As part of the IDE there are commands and toolbars
to, say, execute the current editor contents in an IPython console. We are
currently using the execute() method (inherited from
IPython's HistoryConsoleWidget) to send these commands, and as best I can
tell this is the method by which typical keyboard input is also sent.
Anyway, this approach works fine for sending commands directly to
conventional input prompts.

Difficulty arises when IPython is in debug mode. I'm
currently experimenting with a simple debugging toolbar that will send the
typical pdb commands (next, step, continue, etc.) down to the shell during
a debug session. But using the execute() method as described above does not
work while debugging. It seems like pdb commands must be taking a different
route to get to the kernel, but I can't seem to figure out what it is. Any
guidance you can provide would be most appreciated.

Jed
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