- class _Getch:
- """Gets a single character from standard input. Does not echo to the screen."""
- def __init__(self):
- try:
- self.impl = _GetchWindows()
- except ImportError:
- try:
- self.impl = _GetchMacCarbon()
- except AttributeError:
- self.impl = _GetchUnix()
- def __call__(self): return self.impl()
- class _GetchUnix:
- def __init__(self):
- import tty, sys, termios # import termios now or else you'll get the Unix version on the Mac
- def __call__(self):
- import sys, tty, termios
- fd = sys.stdin.fileno()
- old_settings = termios.tcgetattr(fd)
- try:
- tty.setraw(sys.stdin.fileno())
- ch = sys.stdin.read(1)
- finally:
- termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
- return ch
- class _GetchWindows:
- def __init__(self):
- import msvcrt
- def __call__(self):
- import msvcrt
- return msvcrt.getch()
- class _GetchMacCarbon:
- """
- A function which returns the current ASCII key that is down;
- if no ASCII key is down, the null string is returned. The
- page <a href="http://www.mactech.com/macintosh-c/chap02-1.html">http://www.mactech.com/macintosh-c/chap02-1.html was
- very helpful in figuring out how to do this.
- """
- def __init__(self):
- import Carbon
- Carbon.Evt #see if it has this (in Unix, it doesn't)
- def __call__(self):
- import Carbon
- if Carbon.Evt.EventAvail(0x0008)[0]==0: # 0x0008 is the keyDownMask
- return ''
- else:
- #
- # The event contains the following info:
- # (what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
- #
- # The message (msg) contains the ASCII char which is
- # extracted with the 0x000000FF charCodeMask; this
- # number is converted to an ASCII character with chr() and
- # returned
- #
- (what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
- return chr(msg & 0x000000FF)
- if __name__ == '__main__': # a little test
- print 'Press a key'
- inkey = _Getch()
- import sys
- for i in xrange(sys.maxint):
- k=inkey()
- if k<>'':break
- print 'you pressed ',k
- #该片段来自于http://www.codesnippet.cn/detail/28112012713.html
来源: http://www.codesnippet.cn/detail/28112012713.html