loop beats generator expr creating large dict!?

[David Isaac]

Does George's example raise the question:
why do dictionaries not implement efficient creation
for two common cases?

- Making a dict from two sequences of the same length.
- Making a dict from a sequence and a function
  (as in George's example in this thread).

The current situation is:
use a loop because the obvious generator approach
is not efficient.  Something seems wrong here...

Cheers,
Alan Isaac