tic-tac-toe Code

[PyMahan]

Hello,
im mahan a trainy python programmer and this is my first post!
my tic-tac-toe project is not complete but I will complete it soon.
just wanted to share it and show it in this good forum! the text below is the main file:

##### By Mahan Moosavi ####

from main_module import welcome, sep, sec
from random import *


dict1 = {
"a": 1,
"b": 2,
"c": 3,
"d": 4,
"e": 5,
"f": 6,
"g": 7,
"h": 8,
"i": 9   
}
a, b, c, d, e, f, g, h, i = dict1["a"], dict1["b"], dict1["c"], dict1["d"], dict1["e"], dict1["f"], dict1["g"], dict1["h"], dict1["i"]
def Cube():
            print("_____________________________________________________________________________________________")
            for line in range(1, 26):
                if line != 8 or 16:
                    print(
                    "|                              |                              |                              |")
                if line == 8:
                    print(
                    "|______________________________|______________________________|______________________________|")
                if line == 16:
                    print(
                    "|______________________________|______________________________|______________________________|")
                if line == 4:
                    print(
                    f"              {a}                               {b}                              {c}           ")
                if line == 12:
                    print(
                    f"              {d}                               {e}                              {f}           ")
                if line == 20:
                    print(
                    f"              {g}                               {h}                              {i}           ")

            print("_____________________________________________________________________________________________")
#### Welcome part ####
welcome()
start = input("Start: ")
selectOption = input("Wanna be Y or X? ==> ")
while True:
    if int(start) == 1:
        sep(1)
        if selectOption == "y":
            computerSelect, computerMove = choice(range(1, 10)), "X"
            dict3 = sec(computerSelect, computerMove)
            a, b, c, d, e, f, g, h, i = dict3["a"], dict3["b"], dict3["c"], dict3["d"], dict3["e"], dict3["f"], dict3["g"], dict3["h"], dict3["i"]
            Cube()
            dict2 = sec(int(input("Which section?: ")), "Y")        
            a, b, c, d, e, f, g, h, i = dict2["a"], dict2["b"], dict2["c"], dict2["d"], dict2["e"], dict2["f"], dict2["g"], dict2["h"], dict2["i"]                          
            Cube()
        if selectOption == "X":
            computerSelect, computerMove = choice(range(1, 10)), "Y"
            dict3 = sec(computerSelect, computerMove)
            a, b, c, d, e, f, g, h, i = dict3["a"], dict3["b"], dict3["c"], dict3["d"], dict3["e"], dict3["f"], dict3["g"], dict3["h"], dict3["i"]
            Cube()
            dict2 = sec(int(input("Which section?: ")), "X")        
            a, b, c, d, e, f, g, h, i = dict2["a"], dict2["b"], dict2["c"], dict2["d"], dict2["e"], dict2["f"], dict2["g"], dict2["h"], dict2["i"]        
            Cube()
            
    

        

           

And this is the module I used:

def welcome():
    print("______________________________")
    print("Welcome to Iranian game \" Dooz \" \n For start the game enter <1>:")
    print("______________________________")


def sep(Type):
    if Type == 1:
        print("______________________________")
    elif Type == 2:
        print("___________========___________")
    elif Type == 3:
        print("------------------------------")
    elif Type == 4:
        print("******************************")

dict1 = {
    "a": 1,
    "b": 2,
    "c": 3,
    "d": 4,
    "e": 5,
    "f": 6,
    "g": 7,
    "h": 8,
    "i": 9   
}
def sec(section,val):
    if section == 1:       
        dict1["a"] = val
    if section == 2:
        dict1["b"] = val 
    if section == 3: 
        dict1["c"] = val
    if section == 4: 
        dict1["d"] = val
    if section == 5: 
        dict1["e"] = val
    if section == 6: 
        dict1["f"] = val
    if section == 7: 
        dict1["g"] = val
    if section == 8: 
        dict1["h"] = val
    if section == 9: 
        dict1["i"] = val  
    return dict1
    

I will be so happy to leave command and tell me some tips to make my small project better.