1. a = (3,4,5)
    2. b = (7,8,6)
    3. c = (11,10,9)
    4. d = (1,2,12)
    5. e = input('请输入你的月份')
    6. if e in a:
    7.     print('春季')
    8. elif e in b:
    9.     print('夏季')
    10. elif e in c:
    11.     print('秋季')
    12. elif e in d:
    13.     print('冬季')
    14. else:
    15.     print('输入错误')