VB Auto sells its own brand of spark plugs. To cross-reference to major brands, it keeps a table of equivalent part numbers (see image below). VB Auto wants to computerize the process of looking up part numbers in order to improve its customer service.
The user should be able to enter the part number and brand and look up the corresponding VB Auto part number.
Your program will automatically import all 4 txt files (BrandA.txt , BrandC.txt , BrandX.txt 7 and Brand VB.txt) and place into Lists. Put those lists into a Master List. Search the Master List with the part number and brand to identify the VB Auto part number. Display the VB Auto part number. All in the python shell. The below image gives you the matrix. see image.