You're quite welcome. After 7+ years of using Python professionally, I find I'm still discovering things I didn't know. And, I'm not referring to just new stuff that gets added, either. It's cool to pick up on these little things every once in a while.
If you don't want them always loaded, but rather just for a "calculator mode," you can do something like
If you use ipython, then you can take advantage of autocomplete and not have to type as much, too.