code: def leader(self):
      for i in range(0, len(self.team)):
          if (self.team[i].get_position()) == 1:
              return self.team[i]
      return None
  
imports: from abc import ABC, abstractmethod
  import math
label_desc: Use image node_id 17 for calling the teampursuit obj's underlying member method code with example usage: obj.leader() and returns: None, self