On 4-mei-2006, at 14:47, Saggau wrote: I haven't look at your example just yet, will do that later on. I'm happy you took the time to create a small program that demonstrates the problem you're seeing, that makes is so much easier to search the problem.
> What did I learn from this: > > 1. Try to use cocoa objects instead of python objects in code that > uses bindings; pay special attention to collections (lists, etc.). > At least this *seems* safer because a python object being > referenced from cocoa is probably more likely to cause problems > than a cocoa object controlled from python. (?) Then again, it's > pretty stupid to generalize from one experience... Using Cocoa datastructures instead of python ones when KVO is involved is always a good idea. Python doesn't have enough hooks to allow reliable interception __setitem__. We could (but don't) get 95% of the way by using the same class-swiffling technique as used by the ObjC runtime, but could never go all the way. > 2. GDB is very useful for debugging pyobjc. > 3. There are a lot of nice pyobjc debugging features, but you have > to turn them on (See my example project referenced above). > > Things I want to know: > 1. Is there a way, when one gets the memory address of a pyobjc > proxy object (Like OC_PythonArray) from gdb to figure out which > python object it's proxying? The PyObject* is stored as the instance variable 'value' on the proxy object. > 2. Is there a way to get the python object from a memory address? You mean like "(PyObject*)0xDEADBEEF"? > 3. Is there a reliable way to get (in gdb or pdb) the "Python List > Object at 0x03423blahblahblah information from the python object > being proxied > 4. Can I compile pyobjc with debugging symbols? GDB without them > hurts my brain. PyObjC is compiled with debugging symbols by default. Py2app strips debugging symbols, unless you build with the -A flag. Ronald > Cheers, > Jonathan Saggau > > _______________________________________________ > Pythonmac-SIG maillist - Pythonmac-SIG@python.org > http://mail.python.org/mailman/listinfo/pythonmac-sig _______________________________________________ Pythonmac-SIG maillist - Pythonmac-SIG@python.org http://mail.python.org/mailman/listinfo/pythonmac-sig
