Python3.x 实现实时读取

写在前面

参考了某篇博客，时间长了忘了
Python3.x 只有整行读取（即输入一行，回车后读入），不能实时读取（或者我没发现）

代码

class _Getch:
    """Gets a single character from standard input.  Does not echo to the
screen."""
    def __init__(self):
        try:
            self.impl = _GetchWindows()
        except ImportError:
            self.impl = _GetchUnix()

    def __call__(self): return self.impl()


class _GetchUnix:
    def __init__(self):
        import tty, sys

    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()

getch = _Getch()

# 具体实现
while True:
    cmd = getch()
    if cmd == 'q' or cmd == 'Q':
        break
    print(cmd)

写在后面

Linux 和 Windwos 平台都 OK

comment: