Re: [Pyobjc-dev] A python console-in-a-window

[Kevin A. M. <ka...@ka...>]

On 2/1/08, Michael McCracken <mic...@gm...> wrote:
> Hi, I got the urge to embed a python console in my app so I could poke
> around in it while it was running.
> I didn't find an example of doing just that when I looked, so I
> thought I'd put one together and share it.
>
> I used it like this, tying it to a menu item:
>
>     @IBAction
>     def showPyConsole_(self, sender):
>         if self.pyconsole is None:
>             locals = {'m': self}
>             welcome = "Welcome to the Console.\nThe main window
> controller is called 'm'."
>             self.pyconsole =
> PyConsole.PyConsole.alloc().initWithLocals_welcomeMsg_(locals,
> welcome)
>         self.pyconsole.showWindow_(self)
>
> It pops up a window running a REPL that's pretty close to the python
> interactive interpreter.
>
> The code and xib are here: http://michael-mccracken.net/software/PyConsole.zip
> I've licensed it as BSD.
>
> I'd be curious to hear if anyone else finds it useful.
> (Patches, suggestions, etc are nice too.)
>
> Cheers,
> -mike
>
> --
> Michael McCracken
> misc: http://michael-mccracken.net/wp/
>

For the past few weeks I've been tinkering with the
EmbeddedInterpreter example that comes with the PyObjC 1.4 sources,
with pretty much the same idea of using it in a program under
development. I've only just now gotten it packed up for public use.

One trap to fall into is doing something in the embedded interpreter
that hangs it up. The only choice then is to force quit the app.

I wrote some code that uses Quartz Event Services to trap Control-C
and cause it to interrupt the Python interpreter. There are some hooks
to turn it on and off so that it only interrupts interactive commands,
and not the entire program. Feel free to pick it up and use it; I put
it under the MIT license.

I've been playing with some debugging tools, including an idea for
swizzling existing Objective-C calls and wrapping them with tracing
code. That hasn't really worked out yet, but I'll put something in my
blog if I get something cool put together.

Blog entry:
http://www.kamit.com/blog-entry/2008/02/07/quartz-event-services-interrupting-embedded-python

Code (MIT license):
http://www.kamit.com/hg/InterpreterKeyController

-- 
Kevin A. Mitchell
http://www.kamit.com/