Add Python one-liner for sorting list of dicts by multiple keys

@@ -228,3 +228,9 @@ from itertools import permutations; ["".join(p) for p in permutations(s)]

[val for d in list_of_dicts for val in d.values()]

```

**Example:** `[{'a': 1}, {'b': 2}, {'c': 3}] → [1, 2, 3]`

## Sort a list of dictionaries by multiple keys

```python

sorted(data, key=lambda x: (x['priority'], x['name']))

```

**Example:** `[{'priority': 2, 'name': 'B'}, {'priority': 1, 'name': 'A'}] → [{'priority': 1, 'name': 'A'}, {'priority': 2, 'name': 'B'}]`