Please and im on short time

Python Language and Please screenshoot code and copy the actually code and paste please

4. Write a function named problem4 that accepts a string. Assume the string contains a lot of numbers that are separated by commas. Remove all the duplicates from the list, then calculate and return the sum of remaining elements. Call the function and display the return result. Test it with the test case: if input string is "1,2,3,3,4,4,5", then your method should return 15. (20 pts)