python, please include comments

Question 4. Write a function called AreaCodes that takes the 2D list of states as an argument and returns a list of tuples of state abbreviations & area. 10.0.01 . Arguments: 2D List - states file Return: List of tuples Question 5. I Write a function called Population Density that takes the 2D list of states as an argument, computes and adds each state's population density to its record, and returns the updated states list. Population density is the population divided by the area for any state. Arguments: 2D List - states file Return: 2D List - states file with population density column . Question 4. Write a function called AreaCodes that takes the 2D list of states as an argument and returns a list of tuples of state abbreviations & area. 10.0.01 . Arguments: 2D List - states file Return: List of tuples Question 5. I Write a function called Population Density that takes the 2D list of states as an argument, computes and adds each state's population density to its record, and returns the updated states list. Population density is the population divided by the area for any state. Arguments: 2D List - states file Return: 2D List - states file with population density column