[IPython-dev] autoload and making %pydb be more ipythonic (was: Extensions/pydb_ipy.py added)

R. Bernstein rocky at panix.com
Fri Nov 24 00:39:20 EST 2006

Thanks for applying the patch! 

I am currently out of town, but when I get back I'll try as you suggest below.

I have other patches sitting on a disk somewhere too. 

I don't have a problem adding ipy_pydb.py in the pydb package. But the one thing though that I think would somehow be nice is that if one *didn't* have to do run "import ipy_pydb" to allow %pydb to work. Given that one can put this in a "try" block, I don't see any downside of doing this. 

A cool and more general mechanism for ipython extensions would be something along the lines of Emacs Lisp "autoload". Say if I run %xxx ... then if that's not registered, try to run "import ipy_xxx" (where for example xxx = pydb), and then run %xxx ....  Comments?

Ville M. Vainio writes:
 > On 11/23/06, R. Bernstein <rocky at panix.com> wrote:
 > >  >  > Would it make sense to import pydb.pydb module in pydb_ipy.py, and
 > >  >  > inject the ipython version of Pdb class to the pydb module namespace?
 > >  >  > That way main() would instantiate the ipython version...
 > >  >
 > >  > Good idea! That's be great!
 > >
 > > Nothing has happened on this and I suspect because it wasn't
 > > doable. (At least I couldn't figure out how it would be done. But I
 > > figured if it could that *could* it would be a great thing to do.)
 > This could have worked (in ipy_pydb - untried code):
 > -----
 > import pydb.pydb
 > import Debugger
 > pydb.pydb.Pdb = Debugger.Pdb
 > ------
 > I didn't try it myself because I figured you could have given it more
 > testing mileage. Additionally, I was off the net for a long while due
 > to moving.
 > > So recently, I've added a parameter to pydb so that runv() can get
 > > passed with an Pdb object extended in the way that ipython wants to
 > > extend it. That will be in the next release of pydb (which again can
 > > be timed so that it is no later than the next ipython release).
 > >
 > > I've modified ipy_pydb.py so that it now passes in such a Pdb
 > > object. This was the debug session can make use of pdoc and pinfo. It
 > > also uses the ipython debugger prompt (which personally I'm not a fan
 > > of but I guess it makes it ipython consistent.) There is now the
 > > possibility of using the ipython color scheme, but I couldn't figure
 > > out how to get that passed when creating the Debugger.Pdb object.
 > >
 > > And in going over IPython/Extensions/ipy_pydb.py I've noticed a couple
 > > of other things. First there should be a check that pydb can be
 > > imported and that there is a late enough version of pydb.
 > >
 > > Below is a patch.
 > Not a bad solution, I committed the patch. In general, ipy_pydb.py is
 > "your territory" and I'll gladly commit every patch I get for it
 > immediately. In theory something like ipy_pydb.py could even be
 > bundled w/ pydb, just like python-mode.el is bundled with python...
 > -- 
 > Ville M. Vainio - vivainio.googlepages.com
 > blog=360.yahoo.com/villevainio - g[mail | talk]='vivainio'

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