linux方向键ascii码

import sys
import tty
import termios

def get_key():
    tty.setraw(sys.stdin.fileno())
    select = [sys.stdin]
    try:
        key = ''
        while True:
            if select[0] in select.select(select, [], [], 0)[0]:
                key += sys.stdin.read(1)
                if key in ['\x1b[A', '\x1b[B', '\x1b[C', '\x1b[D']:
                    break
    finally:
        termios.tcsetattr(sys.stdin, termios.TCSADRAIN, settings)
    return key

settings = termios.tcgetattr(sys.stdin)
print("Press arrow keys (q to quit):")
while True:
    key = get_key()
    if key == 'q':
        break
    elif key == '\x1b[A':
        print("Up arrow pressed")
    elif key == '\x1b[B':
        print("Down arrow pressed")
    elif key == '\x1b[C':
        print("Right arrow pressed")
    elif key == '\x1b[D':
        print("Left arrow pressed")