<prompt> Generate a function for calculating the mean of a list.  <response>: Pythondef meannumbers: if not numbers: return None handle case there the list is empty return floatsumnumbersmaxlennumbers,1This function takes a list of numbers as an argument. It checks if the list is empty, and if so, returns none. Otherwise, it finds the sum of all the numbers in the list using the built-in sum function and divides it by the number of elements in the list found using the len function. The result is then returned as a float. 