Python可跨平台实现获取按键的方法

本文实例讲述了Python可跨平台实现获取按键的方法。分享给大家供大家参考。具体如下：

代码如下: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 http://www.mactech.com/macintosh-c/chap02-1.html was 
    very helpful in figuring out how to do this. 
    """
    def __init__(self): 
        import Carbon