':return: è¿œéèæ°é
:rtype: int'

@property
@check_soup('_follower_num')
def follower_num(self):

    if (self.url is None):
        return 0
    else:
        number = int(self.soup.find('div', class_='zm-profile-side-following    zg-clear').find_all('a')[1].strong.text)
        return number
