Program One: BasicsPizza1.py You do NOT need to use functions or a restartfeature. You DO need comments!• This program calculates the total cost of buying a Pizza,and creates an invoice with prices for all the ingredientsand the final total.• Your program should ask the user to input the size of thepizza and all the add-ons the user wants.• Include validation and basic exception handling. Acceptthe appropriate letter response in upper or lower case.• The program must calculate the total price of the pizzabased on the size and the add-ons. You will have all theadd-on prices in your code since the user does not get tochoose what to pay.• Display the output as shown, controlling for the numberof decimal places, $ sign and alignment.• Run more than once to test all the pizza options. I will betesting your program!Pizza2.py You need to copy Pizza1.py and make thefollowing changes:1. Using the MIPO model, rewrite your program sothat a Main() function controls the programflow, sending and receiving data to and from theInputs(), Processing(), and Outputs() functions.Inputs() should ask the user for the requireddata, and ensure it is valid.2.3. Processing() should take the input data andperform the necessary calculations.4. Output() should input and calculated data andformat it all as in Pizza1.5. The program should have a restart at the end ofMain().Welcome to Andy's PizzaYou can choose the pizza size followed by a list of optional toppingsThat size pizza would you like to ander? S/M/L are the options:that toppings would you like to add to customize your sizza?Entara Var (Yes or No) to the following options:Would you like chees? /Ny6.From the user view, the program should appearto run just like Pizza1.Choose from the following cheese option:Please enter the for Chedder, P/p for Pepper Jack, S/s for SwisssWould you like preten? /Choose from the following protein options:Please enter / for Chicken, T/t for Tafu, Sfs for ShrimptoWould you like slives? /MyWould you live peppers? VWould you 11 m/Here is your aizze onderSmall pizza.......$.9.75Selashes.....Program Two: using MIPOChicka....OLIVE...4.4.Pusha..Pizza total......124.25Thanks for ordering a pizza!The program must work with a variety of pizzasizes and options.Make sure you display $ and cents!Final Grading Rubric1. Comments: programs have long comment/ doc string*** at topand # short comments throughout. Long comment includes author,date, and description. Short comments explain functions andimportant code lines.2. Writing/formatting: programs have informative names forvariables, functions, etc. plus high quality user-facing messages,correct spelling, capitalization & formatting of output.3. Programs run & use required design features: For example:mipo_ex model has multiple functions passing data to each other,validation/correction of input, generic exception handling & restartfeature.4. Use of best tools: programs include appropriate data types,expressions, conditional logic, loops, functions & methods. Program Three: Lists and DictionariesPizza3.py You need to copy Pizza2.py and makethe following changes:2.1. Ask how many pizzas are being purchased.Use a loop to ask for the size and options ofeach pizza. These will be put into a list or adictionary.3.Your Outputs() should read from the list ordictionary and format the output as shownbelow.↓Pizza3Welcome to Andy's Pizza3 Menu ProgramHow many pizzas would you like to order? 2You can choose the pizza size followed by a list of optional toppings#1 What size pizza would you like to order? S/M/L are the options:mWhat toppings would you like to add to customize your pizza?Enter a Y or N (Yes or No) to the following options:Would you like cheese? Y/NyChoose from the following cheese options:Please enter C/c for Cheddar, P/p for Pepper Jack, S/s for Swiss:pWould you like protein? Y/NyChoose from the following protein options:Please enter C/c for Chicken, T/t for Tofu, S/s for Shrimp:cWould you like olives? Y/NyWould you like peppers? Y/NnWould you like mushrooms? Y/Ny#2 What size pizza would you like to order? S/M/L are the options:LWhat toppings would you like to add to customize your pizza?Enter a Y or N (Yes or No) to the following options:Would you like cheese? Y/NyChoose from the following cheese options:Please enter C/c for Cheddar, P/p for Pepper Jack, S/s for Swiss:SWould you like protein? Y/NyChoose from the following protein options:Please enter C/c for Chicken, T/t for Tofu, S/s for Shrimp:TWould you like olives? Y/NnWould you like peppers? Y/NyWould you like mushrooms? Y/NnYou can leaveout the zerooptions if youpreferHere is your pizza order#1Medium pizza......$11.75Pepper Jack......Chicken...Olives..........Peppers..Mushrooms....$.3.75$.4.75.$.2.50.$.0.00.$.1.50Pizza total............$24.25#2Large pizza..........$13.75Swiss cheese........$.5.75Tofu......$.3.75Olives....$.0.00Peppers.....$.3.50Mushrooms.... .$.0.00Pizza total...... .$26.75Grand total for 2 pizzas: $ 51.00Thanks for ordering pizza!

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Since you have asked multiple programming question, we will solve the first question for you. If you…