[Python-Dev] Accessing globals without dict lookup (original) (raw)

Skip Montanaro skip@pobox.com
Sun, 10 Feb 2002 15:39:28 -0600 

>> When a function object is created from a regular dict instead of a
>> celldict, func_cells is a NULL pointer.

Tim> This part is regrettable, since it's Yet Another NULL check at the
Tim> *top* of code using this stuff (meaning it slows the normal case,
Tim> assuming that it's unusual not to get a celldict).  I'm not clear
Tim> on how code ends up getting created from a regular dict instead of
Tim> a celldict -- is this because of stuff like "exec whatever in
Tim> mydict"?

I'm still working my way through this thread, so forgive me if this has been hashed out already. It seems to me that the correct thing to do is to convert plain dicts to celldicts when creating functions. Besides, where are functions going to get created that are outside of your (PyhonLabs) control?

Skip