TicTacToe - Py

import random
table = {}

def checkRow(position):
    if(position % 3 == 0):#right-most column
        if(table[position] == table[position - 1] == table[position - 2]):
            return True
    elif(position % 3 == 1):#left-most column
        if(table[position] == table[position + 1] == table[position + 2]):
            return True
    elif(position % 3 == 2):# middle column
        if(table[position] == table[position - 1] == table[position + 1]):
            return True
    return False

def checkCol(position):
    if(position < 4):#first row
        if(table[position] == table[position + 3] == table[position + 6]):
            return True
    elif(position < 7):#second row
        if(table[position] == table[position - 3] == table[position + 3]):
            return True
    elif(position < 10):
        if(table[position] == table[position - 3] == table[position - 6]):
            return True
    return False

def checkDiag(position):
    if(position % 3 == 1):#top-left / bottom left
        if(table[position] == table[(position + 4) % 6] == table[(position + 8) % 12]):
            return True
    elif(position % 3 == 0):#top-right / bottom-right
        if(table[position] == table[(position + 2) % 6] == table[(position + 4) % 12]):
            return True
    elif(position % 3 == 2):#central position
        if(table[position] == table[position - 4] == table[position + 4]):
            return True
        if(table[position] == table[position - 2] == table[position + 2]):
            return True
    return False

def check(position):
    #   1 | 2 | 3
    #   ---------
    #   4 | 5 | 6
    #   ---------
    #   7 | 8 | 9
    #elements at even positions need to be checked only for ROWS and COLUMNS
    #elements at odd positions need to be checked for ROWS, COLUMNS & DIAGONALS also

    #In case if the position is even we don't have to worry about the diagonal checking
    #so by initialising \\\\\diag_status = False///// we eliminate diag_status from the return statement
    diag_status = False
    if(position % 2 == 1):
        diag_status = checkDiag(position)

    row_status = checkRow(position)
    col_status = checkCol(position)
    return row_status or col_status or diag_status

def displayBoard():
    global table
    print(table[1], table[2], table[3], sep=" | ")
    for i in range(1, 3):
        print("---------")
        print(table[3 * i + 1], table[3 * i + 2], table[3 * i + 3], sep=" | ")

def getUserInput():
    #user_position will give the position at which user wants to put their symbol
    print("Enter the position at which you want to place", user, "\t", end="")
    user_position = input()
    #Check for valid position entry
    while(not(user_position.isdigit())):
        print("Please enter an integer")
        user_position = input()
    user_position = int(user_position)
    while(user_position < 1 or user_position > 9):
        print("Please enter a no. between 1 to 9")
        print("Enter the position at which you want to place", user, "\t", end="")
        user_position = int(input())
    #Check if given position is vacant or not i.e. == " "
    while(table.get(user_position) == "X" or table.get(user_position) == "O"):
        print("Position", user_position, "is already occupied\nTry again")
        print("Enter the position at which you want to place", user, "\t", end="")
        user_position = int(input())
    #Everything is OK so we put X/O in the user's desired postion
    return user_position

#-------------------------------------------------------------------------------------------
flag = False#Signifies the end of match. True = end, False = continue
print("Welcome to tic-tac-toe")
user = input("Choose your symbol [X or O]\t")
#Check for symbol correctness
while(not(user == 'X' or user == 'x' or user == 'O' or user == 'o')):
    print("You entered an invalid symbol\nTry again")
    user = input("Choose your symbol [X or O]\t")
user = user.upper()

for i in range(1, 10):#initialising all values in table to their corresponding positions for displaying
    table[i] = table.setdefault(i, i)
displayBoard()
for i in range(1, 10):#initialising all values in table[1-9] = ' '
    table[i] = " "
#displayBoard()
if(user == "X"):
    bot = "O"
else:
    bot = "X"
while(flag == False and (" " in table.values())):
    user_position = getUserInput()
    table[user_position] = user
    flag = check(user_position)
    displayBoard()
    if(flag == True):
        print("You win")
        break
    print("\nBot's turn")
    #Bot's turn
    bot_position = random.randint(1, 9)
    while(table.get(bot_position) == "X" or table.get(bot_position) == "O"):
        bot_position = random.randint(1, 9)

    table[bot_position] = bot
    flag = check(bot_position)
    displayBoard()
    if(flag == True):
        print("Bot wins\nBetter luck next time")
        break

if(flag == False):
    print("It's a tie")