My solution in the end was copied from one I found that was much
simpler and straightforward than most. I meant to post this earlier
but it got lost somewhere:-
import sys, termios, tty
#
#
# Read a single character from teminal, specifically for 'Y/N'
#
fdInput = sys.stdin.fileno()
termAttr = termios.tcgetattr(0)
#
#
# Get a single character, setcbreak rather than setraw meands CTRL/C
etc. still work
#
def getch():
sys.stdout.flush()
tty.setcbreak(fdInput)
ch = sys.stdin.buffer.raw.read(1).decode(sys.stdin.encoding)
termios.tcsetattr(fdInput, termios.TCSAFLUSH, termAttr)
sys.stdout.write(ch)
return ch
#
#
# Get a y or n answer, ignore other characters
#
def getyn():
ch = 'x'
while ch != 'y' and ch != 'n':
ch = getch().lower()
return ch
So getyn() reads a y or an n, ignores anything else and doesn't wait
for a return key. Keyboard input operation is restored to normal
after doing this. Using tty.setcbreak() rather than tty.setraw() means
that CTRL/C etc. still work if things go really wrong.
--
Chris Green
ยท
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