__init__.py 文件源码

def yes_no_input(msg):
    if hasattr(__builtin__, 'raw_input'):
        input = __builtin__.raw_input
    else:
        input = builtins.input

    try:
        choice = input("{} [y/N]: ".format(msg)).lower()
        while True:
            if choice in ['y', 'ye', 'yes']:
                return True
            elif choice in ['n', 'no']:
                return False
            else:
                choice = input(
                    "Please respond with 'yes' or 'no' [y/N]: ").lower()
    except (EOFError, KeyboardInterrupt):
        return False