connect4 engine working

.gitignore

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+DAMA.SECRET
+
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+__pycache__/
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+.pyre/

4_engine.py

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+#!/usr/bin/python3
+
+def drawChequerboard(status,players=[],toprow="1234567"):
+	print(toprow)
+	for row in status:
+		for cell in row:
+			if cell == 0:
+				print("░",end="")
+			else:
+				try:
+					print(players[cell],end="")
+				except IndexError:
+					print(str(cell),end="")
+		print(" ")
+	
+def initChequerboard(cols=7,rows=6):
+	board = list()
+	for row in range(rows):
+		board.append([0]*7)
+	return board
+
+def dropChip(board,move_str,player):
+	failure = (False,0)
+	try:
+		move = int(move_str)-1
+	except ValueError:
+		return failure
+	if move < 0 or move > 6:
+		return failure
+	free_space = -1
+	for row in board:
+		if row[move] != 0:
+			break
+		else:
+			free_space += 1
+	if free_space == -1:
+		return failure
+	board[free_space][move] = player
+	return board, checkFour(board,free_space,move)
+
+def checkFour(board,row,col):
+	offset_pairs = ( ((0,1),(0,-1)) , ((1,0),(-1,0)) , ((1,1),(-1,-1)) , ((-1,1),(1,-1)) )
+	points = 0
+	for offset in offset_pairs:
+		count = 0
+		count += checkSide(board,row,col,offset[0])
+		count += checkSide(board,row,col,offset[1])
+		if count >= 4:
+			points += 1
+	return points
+	
+			
+def checkSide(board,row,col,incs):
+	incY,incX = incs
+	count = 0
+	player = board[row][col]
+	offsetX = 0
+	offsetY = 0
+	while count < 4:
+		try:
+			if board[row+offsetX][col+offsetY] == player:
+				count += 1
+				offsetX += incX
+				offsetY += incY
+			else:
+				break
+		except IndexError:
+			break
+	return count
+		
+
+if __name__ == "__main__":
+	board = initChequerboard()
+	match = True
+	player = 1
+	points_1 = 0
+	points_2 = 0
+	while match:
+		drawChequerboard(board)
+		move = input("Player "+str(player)+" turn:")
+		if move == "q":
+			print("quitting")
+			quit()
+		valid, point = dropChip(board,move,player)
+		if not(valid):	
+			print("Invalid move")
+		else:
+			board = valid
+			if player == 2:
+				points_2 += point
+				player = 1
+			else:
+				points_1 += point
+				player = 2
+		match = False
+		for row in board:
+			for cell in row:
+				if cell == 0:
+					match = True
+	print("Match over")
+	print("Player 1 scored "+str(points_1)+" points")
+	print("Player 2 scored "+str(points_2)+" points")
+	if points_1 > points_2:
+		print("Player 1 won!")
+	elif points_2 > points_2:
+		print("Player 2 won!")
+	else:
+		print("Draw!")