It's much more readable, people won't make mistakes on it the way they do when trying to be too clever with their multiple-for statements in list-comprehensions

It's much more readable, people won't make mistakes on it the way they do when trying to be too clever with their multiple-for statements in list-comprehensions. Trying to pack too much on a single line is one of the sins of perl, and I'm happy to read python code that is comfortable being multi-line.