def wd():

     w=input('请输入一个摄氏温度或者一个华氏温度，如，34c/C or 34f/F：')

     if w[-1] in ['c','C']:

         w=float(w[:-1])

         hs=1.8*w+32

         print('华氏温度：{:.2f}F'.format(hs))

     elif w[-1] in ['f',' F']:

         w=float(w[:-1])

         ss=(w-32)/1.8

         print ('摄氏温度：{:.2f}C'.format(ss))

 wd()