Using msvcrt (in Windows), how to catch Enter key?

[Dick Moores]

Reposting, deleting the [Possible SPAM] from the Subject: header.

At 03:23 PM 10/29/2007, Gabriel Genellina wrote:
 >En Mon, 29 Oct 2007 14:39:49 -0300, Dick Moores <rdm at rcblue.com> escribió:
 >
 > > But here's a case where it seems I do need the
 > >
 > > if msvcrt.kbhit() line
 >
 >At least add a small sleep() call inside the loop, to be nice to other
 >running processes:
 >
 > > =========================
 > > #!/usr/bin/env python
 > > #coding=utf-8
 > > import time
 > > import msvcrt
 > > timeNow = time.time()
 > > oldTimeNow = timeNow
 > > while True:
 > >      if msvcrt.kbhit():
 > >          key = msvcrt.getch()
 > >          if key == 'h':
 > >              print 'Hello'
 > >          if key == 'b':
 > >              print 'Bye'
 > >          if key == '\r': # Enter key
 > >              break
 >         else:
 >             time.sleep(0.1)
 > >      timeNow = time.time()
 > >      if timeNow - oldTimeNow > 5:
 > >          print "5 seconds passed"
 > >          oldTimeNow = timeNow
 > > =========================

Yes, that makes a major difference in the CPU
usage percentage on my computer. In fact I can't
even tell that there is anything going on other
than the usual behind-the-scenes XP stuff. CPU
usage stays right around 0% or 6%, with an
occasional 6% and a very occasional 15%.
Interestingly, sleep(0.001) makes as big a
difference as your sleep(0.1), but sleep(0.0001) bumps it up to a steady 100%!

Thanks,

Dick