new_contents: # coding:utf-8
  
  __author__ = "seerjk"
  
  # 一个list[(1,4),(5,1),(2,3)],根据每个元组中的较大值进行排序
  # 期待结果：[(2,3),(1,4),(5,1)]
  # 要求：用sorted和lambda完成
  # 级别1：用lambda中用max
  # 级别2：lambda中不用max
  # 提示：True乘以4 ==4 Fale乘以2 == 0
  
  # print True*4
  # print False*4
  
  # level 1
  num_list = [(1,4),(5,1),(2,3)]
  
  # level 2
  
  
  # >>> f3 = lambda x: x**2
  # >>> f3(2)
  # 4
  # >>> f4 = lambda x,y: max(x,y)
  # >>> f4(2,3)
  # 3
  # >>> f5 = lambda x,y: (x > y)*x or (x <= y)*y
  # >>> f5(4,5)
  # 5
  # >>> f5(5,4)
  # 5
  # >>> f5(5,5)
  # 5
subject: add homework 01