def get_key():
retval=[0,0]
if msvcrt.kbhit()!=0:
retval[0]=ord(msvcrt.getch())
if msvcrt.kbhit()!=0:
retval[1]=ord(msvcrt.getch())
if retval[0]==224:
if retval[1]!=0:
retval[0]=0
return retval