Source code for sbws.util.userquery

# Based on
[docs]def query_yes_no(question, default="yes"): """ Ask a yes/no question via input() and return the user's answer. :param str question: Prompt given to the user. :param str default: The assumed answer if th user just hits **Enter**. It must be ``'yes'`` (the default if no default is given), ``'no'``, or ``None`` (meaning an answer is required from the user). :returns: ``True`` if we ended up with a 'yes' answer, otherwise ``False``. """ valid = {"yes": True, "y": True, "ye": True, "no": False, "n": False} if default is None: prompt = " [y/n] " elif default == "yes": prompt = " [Y/n] " elif default == "no": prompt = " [y/N] " else: raise ValueError('invalid default answer: "%s"' % default) prompt = question + prompt first_loop = True while True: choice = input(prompt).lower() if default is not None and choice == "": return valid[default] elif choice in valid: return valid[choice] elif first_loop: prompt = ( 'Please respond with "yes" or "no" (or y or n).\n' + prompt ) first_loop = False