There is a slight difference between the two actually.
When the key ``enable_repos`` is present in the yaml, but is empty, the following will return ``None``:
```
rh_updates_data.get('enable_repos', [])
```
It will only return ``[]`` if the key is not present at all.
However, what I used will return ``[]`` both in case when the key is not present at all and when the key is present but without data.

This means that I can cycle over enable_repos and don't really have to care if it's empty (``None`` would break as it's not iterable).