Hi all, In an effort to get (much) better at writing Python code, I've been trying to follow and document what the interpreter does from main in Modules/python.c up through the execution of byte code. Mostly for my own consumption and benefit, but I may blog it if it turns out half way decent.
Anyways, I've been going through PyType_Ready as it sets up copies of PyObjectType, and I'm a bit confused by tp_base, ob_type, and tp_bases. I've been using http://docs.python.org/c-api/index.html as a guideline. So, the documentation states that ob_type is a pointer to the type's type, or metatype. Rather, this is a pointer to the new type's metaclass? Next, we have tp_base. That's defined as "an optional pointer to a base type from which type properties are inherited." The value of tp_base is then added to the tp_bases tuple. This is confusing me. On the surface, it sound as though they're one in the same? I *think* (and dir() of a subclass of type seems to back it up), that tp_base is only at play when the object in question inherits from type? I've tried Googling around a bit. Perhaps it's better documented somewhere? Or perhaps someone can give me a quick explanation? Thanks! Jeff -- http://mail.python.org/mailman/listinfo/python-list
