join method is not working

Question

join method is not working

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#1 by (2 votes)

2

Good! I'm creating the battleship game and I encountered a problem creating the board.

Code:

board = []

for x in range(15):
    board.append(["O"] * 15)

def print_board(board):
    for row in board:
        print (" ").join(row)

And when I print to the board give me this error:

  print (" ").join(row)
AttributeError: 'NoneType' object has no attribute 'join'

And I do not understand what's wrong ... Can anyone help me?

python

asked by anonymous 17.12.2016 / 19:39

1 answer

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score 2 · Answer 1

Probably the parenthesis signal in the print command should be:

for row in board:
  print(" ".join(row)) # -> aqui!!

After the change, the program prints:

O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O
O O O O O O O O O O O O O O O