def set_icon(main):
    """
    Set weather icon
    :param main: weather status
    :type main: str
    :return: icon
    :rtype: str
    """
    data = {'Clear': '☀', 'Clouds': '☁', 'Rain': '☂', 'Snow': '❄',
        'Thunderstorm': '☈', 'Drizzle': '☃', 'Extreme': '⚠'}
    try:
        return data[main]
    except KeyError:
        return ''
