[Pythonmac-SIG] non-blocking keyboard input

[Belinda_Thom at hmc.edu]

What's the best way to get non-blocking input from keyboard w/OS X 10.4?

I've found various potential leads via Google, most using curses (which 
I've never used). I've not found any Mac-specific way of doing this (even 
checked the Mac Python Reference manual). On windows machines, folks were 
talking about an msvcrt module, which I get the impression calls into 
Microsquashes keyboard hit function. Is there something similar for a Mac? 
Ideas?

My application is really basic and will run from the cmd line:

   while(True) :
      if nonBlockInputExists :
         break
      else :
         # continue looping

I am at a loss for how to determine if a key has been pressed.

Thanks much,

--b