old_contents: from c4.evaluate import Evaluator
  from c4.engine.base import Engine
  
  
  class GreedyEngine(Engine):
      def __init__(self):
          self._evaluator = Evaluator()
          self.evaluate = self._evaluator.evaluate
  
      def choose(self, board):
          moves = board.moves()
          m = moves[0]
          moves = moves[1:]
  
          bestmove = m
          bestscore = -self.evaluate(board.move(m))
          
          for m in moves:
              score = -self.evaluate(board.move(m))
              if score > bestscore:
                  bestmove = m
                  bestscore = score
  
          print('Bestscore:', bestscore)
          return bestmove
  
      def __str__(self):
          return 'Greedy'
  
new_contents: from c4.evaluate import Evaluator
  from c4.engine.base import Engine
  
  
  class GreedyEngine(Engine):
      def __init__(self):
          self._evaluator = Evaluator()
          self.evaluate = self._evaluator.evaluate
  
      def choose(self, board):
          moves = board.moves()
          m = moves[0]
          moves = moves[1:]
  
          bestmove = m
          bestscore = -self.evaluate(board.move(m))
  
          for m in moves:
              score = -self.evaluate(board.move(m))
              if score > bestscore:
                  bestmove = m
                  bestscore = score
  
          print('Bestscore:', bestscore)
          return bestmove
  
      def __str__(self):
          return 'Greedy'
  
subject: remove some useless whitespaces