&gt; Plus double-nested (I&#x27;m not sure what you&#x27;d call it) comrpehensions seem to be backwards.<p>Why are you even doing this? This isn&#x27;t an acceptable way to write code.<p>&gt; Plus it&#x27;s so verbose and horizontal, half the time if you want descriptive names you&#x27;re gonna write something so verbose it doesn&#x27;t even make it that much more readable.<p>If your list comprehension is more than 80 characters wide, it&#x27;s not because list comprehensions are bad, it&#x27;s because you did something too complicated. Pull it into a function and name it so people know what the hell you&#x27;re doing.