I've made a working version of Connect Four in Python. I'm pretty new to Python so it's decently primitive. Please take a look and let me know what you think!import randomboard = [[. for x in range(7)] for x in range(6)]symbol = winCondition = fullCols = []def boardLogic(pick, user):    if user == user:        symbol = 0    else:        symbol = X    if board[0][pick] != .:        if board[1][pick] != .:            if board[2][pick] != .:                if board[3][pick] != .:                    if board[4][pick] != .:                        if board[5][pick] != .:                            print(That column is full.)                            if pick not in fullCols:                                fullCols.append(pick)                            fullCols.sort()                            print fullCols                        else:                            board[5][pick] = symbol                    else:                        board[4][pick] = symbol                else:                    board[3][pick] = symbol            else:                board[2][pick] = symbol        else:            board[1][pick] = symbol    else:        board[0][pick] = symboldef printBoard():    for row in board:        for val in row:            print '{:4}'.format(val),        printdef does_square_contain_win(i, j):    #right_diag:  [[i,j], [i-1,j+1], [i-2,j+2], [i-3,j+3]]    if i-3 in range(0, 6) and j+3 in range(0,5):        if board[i][j] == 0 and board[i-1][j+1] == 0 and board[i-2][j+2] == 0 and board[i-3][j+3] == 0:            print(******************************\nPlayer Wins\n******************************)            quit()    if i-3 in range(0, 6) and j+3 in range(0,5):        if board[i][j] == X and board[i-1][j+1] == X and board[i-2][j+2] == X and board[i-3][j+3] == X:            print(******************************\nComputer Wins\n******************************)            quit()    #left_diag:  [[i,j], [i-1,j-1], [i-2,j-2], [i-3,j-3]]    if i-3 in range(0, 6) and j-3 in range(0,5):        if board[i][j] == 0 and board[i-1][j-1] == 0 and board[i-2][j-2] == 0 and board[i-3][j-3] == 0:            print(******************************\nPlayer Wins\n******************************)            quit()    if i-3 in range(0, 6) and j-3 in range(0,5):        if board[i][j] == X and board[i-1][j-1] == X and board[i-2][j-2] == X and board[i-3][j-3] == X:            print(******************************\nComputer Wins\n******************************)            quit()    #right: [[i,j], [i,j+1], [i,j+2], [i,j+3]]    if j+3 in range(0, 5):        if board[i][j] == 0 and board[i][j+1] == 0 and board[i][j+2] == 0 and board[i][j+3] == 0:            print(******************************\nPlayer Wins\n******************************)            quit()    if j+3 in range(0, 5):        if board[i][j] == X and board[i][j+1] == X and board[i][j+2] == X and board[i][j+3] == X:            print(******************************\nComputer Wins\n******************************)            quit()    #down:  [[i,j], [i-1,j], [i-2,j], [i-3,j]]    if i-3 in range(0, 6):        if board[i][j] == 0 and board[i-1][j] == 0 and board[i-2][j] == 0 and board[i-3][j] == 0:            print(******************************\nPlayer Wins\n******************************)            quit()    if i-3 in range(0, 6):        if board[i][j] == X and board[i-1][j] == X and board[i-2][j] == X and board[i-3][j] == X:            print(******************************\nComputer Wins\n******************************)            quit()while True:    printBoard()    #pick a column    while True:        try:            yourPick = int(raw_input('Pick a column 0 - 6: '))        except ValueError:            print 'That\'s not a number!'        else:            if 0 <= yourPick < 6 and yourPick not in fullCols:                break            else:                print 'Out of range or column full. Try again.'    print(yourPick)    #column logic    boardLogic(yourPick, user)    #opponent randomly picks a column    while True:        try:            theirPick = random.randint(0, 6)        except ValueError:            print 'That\'s not a number!'        else:            if theirPick not in fullCols:                break            else:                print 'Column full!'    print(theirPick)    #column logic    boardLogic(theirPick, notUser)    #check win conditions    for i in range(0, 6):        for j in range(0, 5):            does_square_contain_win(i, j)
Connect Four in Python
python;beginner;connect four