Please help me in Python

Requirements for the program 1. This lab is similar to validating 1 row, in a Sudoku puzzle. 2. Given a list of number, similar to this: A = [ 1, 5, 2, 6, 7, 8, 3, 4, 9 ] a. The list will be hard-coded in the program, so can change easily. 3. Given a list of integers, decide whether the row is a valid Soduko row. 4. This means the list has 9 entries, with the numbers 1 - 9, only once. 5. State whether the list is valid or not. 6. Perform these checks to determine if the list is valid. a. The length of the list is 9. b. A number is out of range. Are the number all in the range of 1 - 9. C. Duplicates numbers that are in range. There are one of each number. 7. Output a. Display the list b. If the list is invalid because of the length, or because there are invalid integers in it. Display an appropriate error msg. C. 3rd test, check to see if there are no duplicate numbers in list. d. If all is well, display a valid msg