image.png
    1.

    1. def num_sum(a, b, c):
    2.     return a + b + c
    5. def num_avg(num_sum):
    6.     return num_sum /3
    9. a, b, c = map(int, input('please input 3 numbers，a b c:').split())
    10. print(num_avg(num_sum(a, b, c)))

    2.

    1. l = ["jack",("tom",23),"rose",(14,55,67)]
    2. def f(l):
    3.     for i in l:
    4.         if isinstance(i,tuple):
    5.             f(i)
    6.         else:
    7.             print(i)
    8. f(l)

    3.

    1. infors = [{'name': 'qianan', 'age': 28}, {'name': 'an', 'age': 20}, {'name': 'james', 'age': 25}]
    2. print(sorted(infors, key=lambda k: k['name']))
    3. #infor.sort(key=lambda k: k['name'])
    4. #print(infor)