please follow instruction amd provide sample code. thank you

Write a Python function that does the following: 1. Its name is sum_all 2. It takes a list of numeric values as argument: numbers 3. It returns the sum of all elements in numbers 4. Use a while loop (define an index before the loop, use index in the while condition, change the index inside the loop) Name the program sum. py. Make sure that gradescope gives you the points for passing the test cases