Generate a function for calculating the mean of a list.
```Python
def mean(numbers):
    if not numbers:
        return None # handle case there the list is empty
    return float(sum(numbers))/max(len(numbers),1)

```
This 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.
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Generate a function for calculating the mean of a list.

### Response:
```Python
def mean(numbers):
    if not numbers:
        return None # handle case there the list is empty
    return float(sum(numbers))/max(len(numbers),1)

```
This 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.