Unable to record /save the data on my python GUI App

[Ahmad Shaad Safwi]

Hi everyone! I am new to python and I have made a GUI interface for a cafe.But its only limited up to calculating the values  and not storing the results :

-I want to save (Total cost and Bill reference number ) in a file or say a database table.Please help me out sharing the snippet of one section of the code 

def Ref():

    x = random.randint(10908, 500876)

    randomRef = str(x)

    rand.set(randomRef)

    CoF =float(Fries.get())

    CoD =float(Drinks.get())

    CoFilet =float(Filet.get())

    CoBurger =float(Burger.get())

    CoChicBurger =float(Chicken_Burger.get())

    CoCheese_Burger =float(Cheese_Burger.get())

    CostofFries = CoF * 0.99

    CostofDrinks = CoD * 1.00

    CostofFilet = CoFilet * 2.99

    CostofBurger = CoBurger * 2.87

    CostChicken_Burger = CoChicBurger * 2.89

    CostCheese_Burger = CoCheese_Burger * 2.69

    CostofMeal = "£", str('%.2f' % (CostofFries + CostofDrinks + CostofFilet + CostofBurger

                                    + CostChicken_Burger + CostCheese_Burger))

    PayTax = ((CostofFries + CostofDrinks + CostofFilet + CostofBurger

                                    + CostChicken_Burger + CostCheese_Burger) * 0.2)

    TotalCost = (CostofFries + CostofDrinks + CostofFilet + CostofBurger

                                    + CostChicken_Burger + CostCheese_Burger)

    Ser_Charge =  ((CostofFries + CostofDrinks + CostofFilet + CostofBurger

                                    + CostChicken_Burger + CostCheese_Burger)/99)

    Service = "£", str('%.2f' % Ser_Charge)

    OverAllCost = "£", str('%.2f' % (PayTax + TotalCost + Ser_Charge ))

    PaidTax = "£", str('%.2f' % PayTax)

    Service_Charge.set(Service)

    Cost.set(CostofMeal)

    Tax.set(PaidTax)

    SubTotal.set(CostofMeal)

    Total.set(OverAllCost)

[Venu Bajaj]

if you want to use sql as databse then you can convert the values into string and then establish a connection and pass the value converted to string and store it there. you may have to use sqllite3 for inserting the values.