its the pythonic way to do it

its sometimes more readable

Says the guy who did it in one line

Because it looks like we are pros I think =))

In addition to letters, digits and some punctuation, there are some special service codes, the most notorious of those is the international distress signal SOS (that was first issued by Titanic), that is coded as ···−−−···. These special codes are treated as single special characters, and usually are transmitted as separate words.

That's in the kata's description. Not an issue.