common.py 文件源码

def ask_timezone(question, default, tzurl):
    """Prompt for time zone and validate input"""
    lower_tz = [tz.lower() for tz in pytz.all_timezones]
    while True:
        r = ask(question, str_compat, default)
        r = r.strip().replace(' ', '_').lower()
        if r in lower_tz:
            r = pytz.all_timezones[lower_tz.index(r)]
            break
        else:
            print('Please enter a valid time zone:\n'
                  ' (check [{0}])'.format(tzurl))
    return r