write a neat code in Python as soon as possible

1. Ask (require) the user to enter two numbers for variables "a" and "b"; 2. Compute and display: a=6+a2a40.5+1 3. the program should display text messages if there are calculation errors (for example, division by 0 ); 4. create a list, append 10 different numbers in the range ab to the list and display it; 5. use (create) a function to solve step 4 to get the highest grade; 6. create another list and add every second value of the first list to them, then display it; 7. find and display the fourth smallest number in the second list; 8. use the functionality of sets to find and display symmetric difference in these two lists; 9. save the result of step 8 to a file