code: def best(self):
          '''
          Return current 'best' choice of bandit.
  
          Returns
          -------
          int
              Index of bandit
          '''
  
          if len(self.choices) < 1:
              print('slots: No trials run so far.')
              return None
          else:
              return np.argmax(self.wins/(self.pulls+0.1)f best(self):
          '''
          Return current 'best' choice of bandit.
  
          Returns
          -------
          int
              Index of bandit
          '''
  
          if len(self.choices) < 1:
              print('slots: No trials run so far.')
              return None
          else:
              return np.argmax(self.wins/(self.pulls+0.1))
docs: Return current 'best' choice of bandit.
  
          Returns
          -------
          int
              Index of bandit