I looked but i didn't found the answer (and I'm pretty new to python).

The question is pretty simple. I have a list made of sublists:

```
ll
[[1,2,3], [4,5,6], [7,8,9]]

```

What I'm trying to do is to create a dictionary that has as key the first element of each sublist and as values the values of the coorresponding sublists, like:

```
d = {1:[2,3], 4:[5,6], 7:[8,9]}

```

How can I do that?