# beginner – Text-based Tic Tac Toe in Python (First Project)

I’ve recently started learning Python again after a long time away from it and doing MATLAB at university. Today, I spent some time working on a first little project of mine. Right now it works as it should minus ending the game when all the fields are full. I would love to get advice on how I could improve the code and would like to fix any bad habits early on in learning.

``````    mapA = ((" ", "|", " ", "|", " "),
(" ", "|", " ", "|", " "),
(" ", "|", " ", "|", " "))

def printMap():
# prints out the map
map = ("".join(mapA(0)),
"".join(mapA(1)),
"".join(mapA(2)))
print(map(0))
print(map(1))
print(map(2))

# makes a list of just the fields with x and o
mapB = (map(0).split("|"),
map(1).split("|"),
map(2).split("|"))

for x in range(3): # converts the board to numbers
for y in range(3):
if mapB(x)(y) == "X":
mapB(x)(y) = 1
elif mapB(x)(y) == "O":
mapB(x)(y) = -1
elif mapB(x)(y) == " ":
mapB(x)(y) = 0

for x in range(3):
if abs(sum(mapB(x))) == 3: # checks for full rows
return "END"
elif abs(int(mapB(0)(x)) + int(mapB(1)(x)) + int(mapB(2)(x))) == 3: # checks for full columns
return "END"
if abs(int(mapB(0)(0)) + int(mapB(1)(1)) + int(mapB(2)(2))) == 3: # checks for full right diagonal
return "END"
elif abs(int(mapB(0)(2)) + int(mapB(1)(1)) + int(mapB(2)(0))) == 3: # checks for full left diagonal
return "END"
counter = 0

def choice(): # allows the user to choose O or X
print("O or X?")
symbol = input().lower() # case insensitive
if symbol == "o":
return ("O", "X")
elif symbol == "x":
return ("X", "O")
else:
print("Invalid symbol")
return choice() # restarts the function if the user input neither O nor X

def placement(symbol):
print("Place " + symbol + " in form: rowNumber columnNumber")
x = input()
coordinates = x.split(" ")
while len(coordinates) != 2 or coordinates(0).isnumeric() != True or coordinates(1).isnumeric() != True:
print("Invalid input.")
print("Place " + symbol + " in form: rowNumber columnNumber")
x = input()
coordinates = x.split(" ")
while mapA(int(coordinates(0)) - 1)(int(coordinates(1)) * 2 - 2) != " ":
if mapA(int(coordinates(0)) - 1)(int(coordinates(1)) * 2 - 2) != " ":
print("That space is taken.")
else:
print("Invalid input.")

print("Place " + symbol + " in form: rowNumber columnNumber")
x = input()
coordinates = x.split(" ")

if coordinates(0) == "1" and coordinates(1) == "1":
mapA(0)(0) = symbol
elif coordinates(0) == "1" and coordinates(1) == "2":
mapA(0)(2) = symbol
elif coordinates(0) == "1" and coordinates(1) == "3":
mapA(0)(4) = symbol
elif coordinates(0) == "2" and coordinates(1) == "1":
mapA(1)(0) = symbol
elif coordinates(0) == "2" and coordinates(1) == "2":
mapA(1)(2) = symbol
elif coordinates(0) == "2" and coordinates(1) == "3":
mapA(1)(4) = symbol
elif coordinates(0) == "3" and coordinates(1) == "1":
mapA(2)(0) = symbol
elif coordinates(0) == "3" and coordinates(1) == "2":
mapA(2)(2) = symbol
elif coordinates(0) == "3" and coordinates(1) == "3":
mapA(2)(4) = symbol
return printMap()

symbol = choice()
printMap()
end = ""

while end != "END":

end = placement(symbol(0))

if end == "END":
print("Game Finished")
break
end = placement(symbol(1))
if end == "END":
print("Game Finished")
break

tictac()
``````