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    一、

    1. month = int(input('请输入月份:'))
    2. if month in [3,4,5]:
    3.     print('%d月是春天'%month)
    4. elif month in [6,7,8]:
    5.     print('%d月是夏天'%month)
    6. elif month in [9,10,11]:
    7.     print('%d月是秋天'%month)
    8. elif month in [12,1,2]:
    9.     print('%d月是冬天'%month)
    10. else:
    11.     print('请输入正确的月份')
    1. m = int(input('请输入月份:'))
    2. months = [3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2]
    3. reasons = ['春', '夏', '秋', '冬']
    4. if m in months:
    5.     print(f"{m}月是{reasons[months.index(m) // 3]}天")
    6. else:
    7.     print('请输入正确的月份')
    1. dic1 = {(3, 4, 5,): '春季', (6, 7, 8,): '夏季', (9, 10, 11,): '秋季', (12, 1, 2,): '冬季'}
    2. m = int(input('请输入月份，查看所在季节：'))
    3. for i in dic1.keys():
    4.     if m in i:
    5.         print(dic1[i])

    二、

    1. li = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]
    2. li.append(li.pop(0)) #在li尾部添加从li取出的元素1
    3. print(li)

    三、

    1. coutent = input('plesae input：')
    2. a,b = map(int,coutent.split('+'))
    3. print(a+b)
    1. d = {'a': 1 , 'b' : 2}
    2. key1 = input('请输入您的key：')
    3. value1 = d.get(key1)
    4. if value1 != None:
    5.     print(f'{key1}对应的值为{value1}')
    6. else:
    7.     print('您输入的key不存在，请重新输入')