def CreateGrid(size):
    """Accept a list, create a size by size blank 2-d list"""
    #row = a list of the current row being added
    #board = the list that corresponds to the board being constructed

    board = []

    for rows in range(size):
        row = []
        for cols in range(size):
            row.append(" ")
        board.append(row)

    return board