__init__.py 文件源码

def default_input(prompt, default=None):
    # https://chistera.yi.org/~dato/blog/entries/2008/02/14/python_raw_input_with_an_editable_default_value_using_readline.html
    if not default:
        default = ""

    def pre_input_hook():
        readline.insert_text(default)
        readline.redisplay()

    prompt += ": "
    readline.set_pre_input_hook(pre_input_hook)
    try:
        return raw_input(prompt)
    finally:
        readline.set_pre_input_hook(None)