> It also has been suggested by some on the Tcl core team (during > discussions about this bug) that you probably shouldn't be using > Tcl_GetObjType and relying on the registered Tcl_ObjTypes, however I'm > not sure of a way to get what you need otherwise.
Hi George, I hope I can find some time next week to look into this in more detail, but please let me respond to this first. In Python, objects have a fixed type, given to them at the point of creation. Also, it is common in Python to use multiple types, not just a single one (say, string). So to convert between Tcl objects and Python objects, we would like to preserve type information as much as possible. To do that, _tkinter has two functions: AsObj (converting PyObject to Tcl_Obj), and FromObj (converting Tcl_Obj to PyObj). We map the well-known (registered) types 1:1 to appropriate Python types, and have a default for the rest. If Tcl_GetObjType was not available, I see no other way but to convert everything through strings, which would put the burden of typing things onto the Tkinter user (or perhaps on Tkinter, to type the well-known commands). Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
