board = [
        [' ', ' ', ' '],
        [' ', ' ', ' '],
        [' ', ' ', ' ']
    ]

r = 0
c = 1
print(board[0])
print(board[1])
print(board[2])

# Want to ...
# embed in a loop
# for / while, then conditional / if
# use code at #"index()" below as template

print(len(board))
# partial loop
for r in range(len(board)):
    print("r is : ", r)
    print(board[r])

print(board.index([1][1]))

# index()
for r in board.index([r]):
    for c in board.index([r][c]):
        if board.index([r][c]) != " ":
            print(f"board[{r}][{c}] is occupied.")
        elif board.index([r][c]) == " ":
            print(f"board[{r}][{c}] is first empty cell.")
            print("game continues")
            break
