I have used my own and 3 different "working codes from here. All return the same error.

Oops, try again.

average([3, 0]) resulted in an error: 'int' object is not iterable.

samples include:

def average(numbers):

total = sum(numbers)

return float(total)/len(numbers)

and:

def average(numbers):

```
total = sum(numbers)
total = float(total)
total /=len(numbers)
return(total)
```

plus one other...they all appear to be correct...yet I get the ....

Oops, try again.

average([3, 0]) resulted in an error: 'int' object is not iterable