How to code this question with Python programming? Can explain for me each code too?

The letters in a product code is sorted alphabetically. E.g., a product with product code ABBBG is made up of 1 A, 3 B and 1 G parts. (a) Write and develop a function getPartsInCode which has one string parameter: productCode. The function returns a string in this format: n1p1 n2p2 nkpk. Note nipis are separated by space. For example, if product code is ABBBG, then the function returns 1A 3B 1G. Note that the letters in the string parameter are in uppercase and are already sorted. You can use collections of only str type for function. This means collection types such as set, list, dict are not allowed. (5 marks) Apply and employ structured programming and write an application to manage the factory. Other than the data specified in Q2(b), you may use collections of any types for other data in your application. However, you should assume that the user input for product code is not sorted alphabetically. (b) Initialise the following program data in your main method (that is, these variables are not global variables):

The stock level for each part is 100 at the start of the application. startLevel = 100

The reorder point for each part is 20. Once the stock level is 20 or below, the part should be reordered. reorderPoint = 20

A string records the letters A L. One letter is used to identify a part in the factory. partIds = 'ABCDEFGHIJKL'

An un-nested list records the stock level of each part. The stock level for each part starts with the value recorded in startLevel. For example, stock level for part A should be recorded at the 0-index, stock level for part B should be recorded at the 1-index, etc. Use another un-nested list to store existing product codes. Start the list empty. (c) Offer this menu repeatedly until option 0 is selected to end the application:

Menu

1. Add product code

2. List inventory

3. Update inventory

4. Make product

5. Get summarised data

0. Exit Add product code The program reads a product code. Note that as the letters may be unsorted when it is entered and the letters may be in uppercase or lowercase. The program first sorts the product code and then checks whether the code is valid.

A valid code fulfills these criteria: o The code is at least 3 characters in length. o Each character is a letter from A to L.

If the code is valid, the program adds it to a list of product codes if the code is not already in the list of product codes. Display the following messages where appropriate: o The product code is invalid o The product code already exists o The product code has been added successfully

thanks.