while True:
    a = int(input(‘摄氏转华氏 1\n华氏转摄氏 2\n退出请按 3\n‘))
    if a==1:
       c = float(input(‘请输入摄氏温度‘))
       f = c*9/5+32
       print(‘摄氏{:.2f}的华氏为{:.2f}\n‘.format(c,f))
    elif a==2:
       f = float(input(‘请输入华氏温度:‘))
       c = 5/9*(f-32)
       print(‘华氏{:.2f}的摄氏为{:.2f}\n‘.format(f,c))
    else:
        break
  
原文:https://www.cnblogs.com/yaoyaoyuan/p/8947460.html