code: def get_player_id(player):
      
      players_df = get_all_player_ids("all_data")
      player = players_df[players_df.DISPLAY_LAST_COMMA_FIRST == player]
      # if there are no plyaers by the given name, raise an a error
      if len(player) == 0:
          er = "Invalid player name passed or there is no player with that name."
          raise ValueError(er)
      player_id = player.PERSON_ID.values
      return player_id
docs: Returns the player ID(s) associated with the player name that is passed in.
  
      There are instances where players have the same name so there are multiple
      player IDs associated with it.
  
      Parameters
      ----------
      player : str
          The desired player's name in 'Last Name, First Name' format. Passing in
          a single name returns a numpy array containing all the player IDs
          associated with that name.
  
      Returns
      -------
      player_id : numpy array
          The numpy array that contains the player ID(s).