Respect that playerInput can be none

seopardy.py

@@ -73,19 +73,20 @@ if __name__ == '__main__':
 	# create and start input threads
 	print(config["playerInput"])
 	inputs = []
-	for playerInput in config["playerInput"]:
-		args = playerInput.get("Args", [])
-		if args is None:
-			args = []
+	if config["playerInput"] is not None:
+		for playerInput in config["playerInput"]:
+			args = playerInput.get("Args", [])
+			if args is None:
+				args = []
 
-		try:
-			inp = get_input(playerInput["Type"], args, app)
-			inputs.append(inp)
-		except InputException as e:
-			print("Error: %s" % e, file=sys.stderr)
-			sys.exit(1)
+			try:
+				inp = get_input(playerInput["Type"], args, app)
+				inputs.append(inp)
+			except InputException as e:
+				print("Error: %s" % e, file=sys.stderr)
+				sys.exit(1)
 
-		inputs[-1].start()
+			inputs[-1].start()
 
 	# create board
 	board = SeopardyGame(questions, gamestate)