util.py 文件源码

def ask_list(label, items, alt=None, default=None):
    completer = AutoCompleter(items)
    readline.set_completer(completer.complete)
    readline.set_completer_delims('')
    readline.parse_and_bind('tab: complete')

    item = None
    while not item:
        item = ask_string(label, default=default)
        if item not in items:
            if alt and item in alt:
                item = items[alt.index(item)]
            else:
                print("Invalid entry (try pressing TAB)")
                item = None

    readline.set_completer(None)
    return item