Only for review sake

I think I would have preferred to see a function returning a list (or a generator?) with the results. You could have used that list to print it any way you like. Also for the future try to replace string concatenation done with '+' operator with [string formatting][https://docs.python.org/2/library/string.html#string-formatting]. E.g.
```
pretty = ""
for res in results:
    pretty = "{}, {}".format(pretty, res)