banking

money = 0
is_running = True

def ballance():
    with open('ballance.txt', 'r') as f:
        data = f.read().strip()
        print("Your account balance is", data)
        
def withdrawl():
    global money
    with open('ballance.txt', 'r') as f:
        money = int(f.read().strip()) 
    
    take = int(input("\nHow much do you want to withdraw: "))
        
    money -= take
    with open('ballance.txt', 'w') as f:
            f.write(str(money))

def deposit():
    global money
    with open('ballance.txt', 'r') as f:
        money = int(f.read().strip()) 
    give = int(input("\nHow much do you want to deposit: "))
    money += give
    with open('ballance.txt', 'w') as f:
        f.write(str(money))

while is_running == True:
    print("\naccount ballance (1)")
    print("whithdrawl       (2)")
    print("deposit          (3)")
    print("exit    (q)")
    
    choice = input("\nselect youre option: ")
    
    if choice == "q":
        quit() 
    
    elif choice == "1":
        ballance()
        
    elif choice == "2":
        withdrawl()
    
    elif choice == "3":
        deposit()

    else:
        print("invalid option ")