interactive menu

gistfile1.txt

#coding=utf-8
from blessings import Terminal
import readchar
from readchar import key
import os
terminal = Terminal()
current = 0
choices = ['a','b','c']

#os.system('clear')
while True:
    with terminal.location():
        print('[%d]select commands~'%current)
        for choice in choices:
            if choice == choices[current]:
                symbol = '{t.red}>{t.normal}'.format(t=terminal)
            else:
                symbol = ' '
            print(symbol+choice)

    pressed = readchar.readkey()
    if pressed == key.UP:
        current = max(0, current - 1)
        continue
    if pressed == key.DOWN:
        current = min(len(choices) - 1, current + 1)
        continue
    if pressed == key.ENTER:
        print('[%d]'%current+terminal.clear_eol())
        os.system('ls')
        break
    if pressed == key.CTRL_C:
        raise KeyboardInterr