invalid syntax

players = []

adding_player = input("would you like to add a player? YES/NO") while adding_player.lower()== "yes": name = input("enter the player name, please") players.append(name) adding_player = input("would you like to add another player? yes/no")

print(" there are {} players".format(len(players))

player_number = 1 for player in players: print("player{}:{}".format(player_number, player)) player_number += 1

keeper = input("enter the player number you wish to be the goalkeeper? (1-{}) ".format(len(players)))
keepr=int(keeper)

print(" the goal keeper will be {}".format(players[keeper-1])) ...

i'm getting invalid syntax at the ..player_number = 1 why it is not valid syntax, it is just a variable and a number assigned to it. thanks.