'''     得到导航的域名来生成以www.和m开头的域名 ''' class Shengcheng_domain(object):     '''         读取本地原始域名     '''     def open_url(self):         with open('../ys_domain/ys.txt', 'r', encoding='utf-8') as f:             data = f.readlines()         return data     # 生成以www.开头的域名     def w_url(self, data):         w_list = list()         for da in data:             da = 'www.' + da             print(da)             w_list.append(da)         return w_list     # 生成以m.开头的域名     def m_url(self, data):         m_list = list()         for da in data:             da = 'm.' + da             print(da)             m_list.append(da)         return m_list     # 保存域名     def save(self, mlist, wlist):         for d in data:             with open('../domain_one/jg.txt', 'a+', encoding='utf-8') as f:                 f.write(d)         for w in wlist:             with open('../domain_one/jg.txt', 'a+', encoding='utf-8') as f:                 f.write(w)         for m in mlist:             with open('../domain_one/jg.txt', 'a+', encoding='utf-8') as f:                 f.write(m) if __name__ == '__main__':     sc = Shengcheng_domain()     data = sc.open_url()     wlist = sc.w_url(data)     mlist = sc.m_url(data)     sc.save(mlist, wlist)