Updated on 9/17/19 to support version 2 and version 3 of Python
Arguably the oldest video games was a variation of Tic-tac-toe. To read more about this, see this link. Many English-speaking countries outside the U.S. refer to the game as Noughts and Crosses (according to Wikipedia).
In the U.S., November 11th is the day America observes Veteran's Day. This day in 2018 will mark the 100th anniversary of the public holiday. (1) To learn more about the history of the celebration, see this link.
----------------------------------------------------------------------------------------------------------------------------------
If you have Python installed, two people can share a keyboard and use the Python program below. Save the program as tictactoe.py and run it with "python tictactoe.py".
# Updated on 8/29/21
# Tic-tac-toe game in Python 3. Written by continualintegration.com.
print("This is a two player game of tictactoe. One person can pretend to be the other player.")
print("Both players should share a keyboard and monitor.")
print("The legend for squares in the grid is as follows: ")
print(" ")
print("***************************************************************")
print("ltc is left-top-corner, tm is top-middle, rtc is right-top-corner")
print("lm is left-column-middle-row, c is center, mr is middlerow-right-column")
print("lbc is left-bottom-corner, bm is bottom-middle, rbc is right-bottom-corner")
print("***************************************************************")
print(" ")
print("Enter a cell based on the legend above.")
r = 1
mark = 'z'
goodlist = [" ", " ", " ", " ", " ", " ", " ", " ", " "]
first = input("Player 1, please enter which location you want to mark with X: ")
w, hh = 8, 5
a, b, c, d, e, f, g, h, i, j = ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '
board = [[0 for x in range(w)] for y in range(hh)]
board[1][0] = '|'
board[1][1] = a
board[1][2] = '|'
board[1][3] = b
board[1][4] = '|'
board[1][5] = c
board[1][6] = '|'
board[2][0] = '|'
board[2][1] = d
board[2][2] = '|'
board[2][3] = e
board[2][4] = '|'
board[2][5] = f
board[2][6] = '|'
board[3][0] = '|'
board[3][1] = g
board[3][2] = '|'
board[3][3] = h
board[3][4] = '|'
board[3][5] = i
board[3][6] = '|'
toprow = ''
midrow = ''
bottomrow = ''
def printer(goodlist):
board[1][0] = '|'
board[1][1] = goodlist[0]
board[1][2] = '|'
board[1][3] = goodlist[1]
board[1][4] = '|'
board[1][5] = goodlist[2]
board[1][6] = '|'
board[2][0] = '|'
board[2][1] = goodlist[3]
board[2][2] = '|'
board[2][3] = goodlist[4]
board[2][4] = '|'
board[2][5] = goodlist[5]
board[2][6] = '|'
board[3][0] = '|'
board[3][1] = goodlist[6]
board[3][2] = '|'
board[3][3] = goodlist[7]
board[3][4] = '|'
board[3][5] = goodlist[8]
board[3][6] = '|'
toprow = ''
midrow = ''
bottomrow = ''
for x in range(0, 7):
toprow = toprow + board[1][x]
midrow = midrow + board[2][x]
bottomrow = bottomrow + board[3][x]
print("-------")
print(toprow)
print(midrow)
print(bottomrow)
print("-------")
return
def marker(loc, mark, r):
if (loc == 'ltc'):
a = mark
callagain(loc, r)
elif (loc == 'tm'):
b = mark
callagain(loc, r) # no c on purpose
elif (loc == 'rtc'):
d = mark
callagain(loc, r)
elif (loc == 'lm'):
e = mark
callagain(loc, r)
elif (loc == 'c'):
f = mark
callagain(loc, r)
elif (loc == 'mr'):
g = mark
callagain(loc, r)
elif (loc == 'lbc'):
h = mark
callagain(loc, r)
elif (loc == 'bm'):
i = mark
callagain(loc, r)
elif (loc == 'rbc'):
j = mark
callagain(loc, r)
else:
print("************Invalid input******************")
r = r - 1
def checker(goodlist):
for x3 in range(1, 4): # the variable's name is "x3". This section is for horizontal wins.
if board[x3][1] == board[x3][3]:
if board[x3][3] == board[x3][5]:
if board[x3][5] == 'X':
print("Player 1 Wins!!!!!")
var1 = "stop"
quit()
elif board[x3][5] == 'O':
print("Player 2 Wins!!!!!")
var1 = "stop"
quit()
else:
var1 = "go"
for y3 in range(1, 6): # the variable's name is "y3" This section is for vertical wins.
if board[1][y3] == board[2][y3]:
if board[2][y3] == board[3][y3]:
if board[3][y3] == 'X':
print("Player 1 Wins!!!!!")
var1 = "stop"
quit()
elif board[3][y3] == 'O':
print("Player 2 Wins!!!!!")
var1 = "stop"
quit()
else:
var1 = "go"
# Diagonal checking below.
if board[1][1] == board[2][3]:
if board[2][3] == board[3][5]:
if board[3][5] == 'X':
print("Player 1 Wins!!!!!")
var1 = "stop"
quit()
elif board[3][5] == 'O':
print("Player 2 Wins!!!!!")
var1 = "stop"
quit()
else:
var1 = "go"
if board[1][5] == board[2][3]:
if board[2][3] == board[3][1]:
if board[3][1] == 'X':
print("Player 1 Wins!!!!!")
var1 = "stop"
quit()
elif board[3][1] == 'O':
print("Player 2 Wins!!!!!")
var1 = "stop"
quit()
else:
var1 = "go"
catgamechecker(goodlist) # See if it is a Cat's game (aka a tie).
return var1
def catgamechecker(goodlist):
if (goodlist[0] != " "):
if (goodlist[1] != " "):
if (goodlist[2] != " "):
if (goodlist[3] != " "):
if (goodlist[4] != " "):
if (goodlist[5] != " "):
if (goodlist[6] != " "):
if (goodlist[7] != " "):
if (goodlist[8] != " "):
print("Cat's Game. Game over. It was a tie.")
var1 = "stop"
quit()
def playeralt(let, r):
if checker(goodlist) == "go":
if (r % 2 == 0):
mark = 'X'
call2(let, mark, r)
if aw == "go":
print("Player 2, where should an O go?")
else:
mark = 'O'
call2(let, mark, r)
if aw == "go":
print("Player 1, where should an X go?")
else:
quit()
def callagain(let, r):
a = checker(goodlist)
playeralt(let, r)
def call2(let, mark, r):
if (let == 'ltc'):
subcall2(let, mark, r, 0)
elif (let == 'tm'):
subcall2(let, mark, r, 1) # goodlist[1]=mark
elif (let == 'rtc'):
subcall2(let, mark, r, 2) # goodlist[2]=mark
elif (let == 'lm'):
subcall2(let, mark, r, 3) # goodlist[3]=mark
elif (let == 'c'):
subcall2(let, mark, r, 4) # goodlist[4]=mark
elif (let == 'mr'):
subcall2(let, mark, r, 5) # goodlist[5]=mark
elif (let == 'lbc'):
subcall2(let, mark, r, 6) # goodlist[6]=mark
elif (let == 'bm'):
subcall2(let, mark, r, 7) # goodlist[7]=mark
elif (let == 'rbc'):
subcall2(let, mark, r, 8) # goodlist[8]=mark
else:
print("*****************Invalid input************")
r = r - 1
printer(goodlist)
checker(goodlist)
r += 1
print("********************************")
if r % 2 == 0:
player = "Player 1"
md = 'X'
else:
player = "Player 2"
md = 'O'
loc = input(player + " please enter which location you want to mark with an " + md + ": ")
checker(goodlist)
callagain(loc, r) # marker(loc, mark, r)
def subcall2(let, mark, r, glnum):
if (goodlist[glnum] == ' '):
goodlist[glnum] = mark
else:
print("That square was already taken. Please try again!")
print("Player with " + mark + " needs to go again.")
if r % 2 == 0:
player = "Player 1"
md = 'X'
else:
player = "Player 2"
md = 'O'
loc = input(player + " please enter which location you want to mark with an " + md + ": ")
checker(goodlist)
callagain(loc, r)
marker(first, 'X', 0)# The program above is for Python 3 is above. The program below is for Python 2.
# Tic-tac-toe game in Python 2. Written by continualintegration.com.
# Updated on 8/29/21
print "This is a two player game of tictactoe. One person can pretend to be the other player."
print "Both players should share a keyboard and monitor."
print "The legend for squares in the grid is as follows: "
print " "
print "***************************************************************"
print "ltc is left-top-corner, tm is top-middle, rtc is right-top-corner"
print "lm is left-column-middle-row, c is center, mr is middlerow-right-column"
print "lbc is left-bottom-corner, bm is bottom-middle, rbc is right-bottom-corner"
print "***************************************************************"
print " "
print "Enter a cell based on the legend above."
r = 1
mark = 'z'
goodlist = [" ", " ", " ", " ", " ", " ", " ", " ", " "]
first = raw_input("Player 1, please enter which location you want to mark with X: ")
w, hh = 8, 5;
a, b, c, d, e, f, g, h, i, j = ' ', ' ',' ', ' ',' ', ' ',' ', ' ',' ', ' '
board = [[0 for x in range(w)] for y in range(hh)]
board[1][0]='|'
board[1][1]= a
board[1][2]= '|'
board[1][3]= b
board[1][4]= '|'
board[1][5]= c
board[1][6]= '|'
board[2][0]='|'
board[2][1]= d
board[2][2]= '|'
board[2][3]= e
board[2][4]= '|'
board[2][5]= f
board[2][6]= '|'
board[3][0]='|'
board[3][1]= g
board[3][2]= '|'
board[3][3]= h
board[3][4]= '|'
board[3][5]= i
board[3][6]= '|'
toprow = ''
midrow = ''
bottomrow = ''
def printer(goodlist) :
board[1][0]='|'
board[1][1]= goodlist[0]
board[1][2]= '|'
board[1][3]= goodlist[1]
board[1][4]= '|'
board[1][5]= goodlist[2]
board[1][6]= '|'
board[2][0]='|'
board[2][1]= goodlist[3]
board[2][2]= '|'
board[2][3]= goodlist[4]
board[2][4]= '|'
board[2][5]= goodlist[5]
board[2][6]= '|'
board[3][0]='|'
board[3][1]= goodlist[6]
board[3][2]= '|'
board[3][3]= goodlist[7]
board[3][4]= '|'
board[3][5]= goodlist[8]
board[3][6]= '|'
toprow = ''
midrow = ''
bottomrow = ''
for x in range(0, 7):
toprow = toprow + board[1][x]
midrow = midrow + board[2][x]
bottomrow = bottomrow + board[3][x]
print "-------"
print toprow
print midrow
print bottomrow
print "-------"
return
def marker(loc, mark, r):
if (loc == 'ltc'): a=mark; callagain(loc, r)
elif (loc == 'tm'): b=mark; callagain(loc, r) # no c on purpose
elif (loc == 'rtc'): d=mark; callagain(loc, r)
elif (loc == 'lm'): e=mark; callagain(loc, r)
elif (loc == 'c'): f=mark; callagain(loc, r)
elif (loc == 'mr'): g=mark; callagain(loc, r)
elif (loc == 'lbc'): h=mark; callagain(loc, r)
elif (loc == 'bm'): i=mark; callagain(loc, r)
elif (loc == 'rbc'): j=mark; callagain(loc, r);
else: print "************Invalid input******************"; r = r -1;
def checker(goodlist):
for x3 in range(1,4): #the variable's name is "x3". This section is for horizontal wins.
if board[x3][1] == board[x3][3]:
if board[x3][3] == board[x3][5]:
if board[x3][5] == 'X': print "Player 1 Wins!!!!!"; var1 = "stop"; quit()
elif board[x3][5] == 'O': print "Player 2 Wins!!!!!"; var1 = "stop"; quit()
else: var1 = "go"
for y3 in range(1,6): #the variable's name is "y3" This section is for vertical wins.
if board[1][y3] == board[2][y3]:
if board[2][y3] == board[3][y3]:
if board[3][y3] == 'X': print "Player 1 Wins!!!!!"; var1 = "stop"; quit()
elif board[3][y3] == 'O': print "Player 2 Wins!!!!!"; var1 = "stop"; quit()
else: var1 = "go"
# Diagonal checking below.
if board[1][1] == board[2][3]:
if board[2][3] == board[3][5]:
if board[3][5] == 'X': print "Player 1 Wins!!!!!"; var1 = "stop"; quit()
elif board[3][5] == 'O': print "Player 2 Wins!!!!!"; var1 = "stop"; quit()
else: var1 = "go"
if board[1][5] == board[2][3]:
if board[2][3] == board[3][1]:
if board[3][1] == 'X': print "Player 1 Wins!!!!!"; var1 = "stop"; quit()
elif board[3][1] == 'O': print "Player 2 Wins!!!!!"; var1 = "stop"; quit()
else: var1 = "go"
catgamechecker(goodlist) # See if it is a Cat's game (aka a tie).
return var1
def catgamechecker(goodlist):
if (goodlist[0] != " "):
if (goodlist[1] != " "):
if (goodlist[2] != " "):
if (goodlist[3] != " "):
if (goodlist[4] != " "):
if (goodlist[5] != " "):
if (goodlist[6] != " "):
if (goodlist[7] != " "):
if (goodlist[8] != " "):
print "Cat's Game. Game over. It was a tie."
var1 = "stop";
quit()
def playeralt(let, r):
if checker(goodlist) == "go":
if r % 2 == 0:
mark = 'X'
call2(let, mark, r)
if aw == "go": print "Player 2, where should an O go?"
else:
mark = 'O'
call2(let, mark, r)
if aw == "go": print "Player 1, where should an X go?"
else:
quit()
def callagain(let, r):
a = checker(goodlist)
playeralt(let, r)
def call2(let, mark, r):
if (let == 'ltc'): subcall2(let, mark, r, 0);
elif (let == 'tm'): subcall2(let, mark, r, 1); #goodlist[1]=mark;
elif (let == 'rtc'): subcall2(let, mark, r, 2); #goodlist[2]=mark;
elif (let == 'lm'): subcall2(let, mark, r, 3); #goodlist[3]=mark;
elif (let == 'c'): subcall2(let, mark, r, 4); #goodlist[4]=mark;
elif (let == 'mr'): subcall2(let, mark, r, 5); #goodlist[5]=mark;
elif (let == 'lbc'): subcall2(let, mark, r, 6); #goodlist[6]=mark;
elif (let == 'bm'): subcall2(let, mark, r, 7); #goodlist[7]=mark;
elif (let == 'rbc'): subcall2(let, mark, r, 8); #goodlist[8]=mark;
else: print "*****************Invalid input************"; r = r -1;
printer(goodlist)
checker(goodlist)
r += 1
print "********************************"
if r % 2 == 0:
player = "Player 1"; md = 'X'
else: player = "Player 2"; md = 'O';
loc = raw_input(player + " please enter which location you want to mark with an " + md + ": ")
checker(goodlist)
callagain(loc, r) #marker(loc, mark, r)
def subcall2(let, mark, r, glnum):
if (goodlist[glnum] == ' '): goodlist[glnum]=mark;
else:
print "That square was already taken. Please try again!"
print "Player with " + mark + " needs to go again."
if r % 2 == 0:
player = "Player 1"; md = 'X'
else: player = "Player 2"; md = 'O';
loc = raw_input(player + " please enter which location you want to mark with an " + md + ": ")
checker(goodlist)
callagain(loc, r)
marker(first, 'X', 0)