https://www.codecademy.com/courses/python-beginner-nzzVa/3/2?curriculum_id=4f89dab3d788890003000096#

I don't understand this lesson I am on. I have the right "for" function, don't I? I keep getting this error message: "Oops, try again. double_list([0, 1]) resulted in an error: list index out of range" Any help on this will be greatly appreciated, thanks guys!

```
n = [3, 5, 7]
def double_list(x):
for i in range(0, len(n)):
x[i] = x[i] * 2
# Don't forget to return your new list!
return double_list
print double_list(n)
```