Lib has some patterns that could be easily discovered and cleaned up. Doing so will reduce the number of unnecessary temporary lists in memory and unnecessary function calls. It will also take advantage of Python's own rich features in a way that better dog foods the language. For example:

* Replace list(<generator expression>) with list comprehension
* Replace dict(<generator expression>) with dict comprehension
* Replace set(<generator expression>) with set comprehension
* Replace builtin func(<list comprehension>) with func(<generator expression>) when supported (e.g. any(), all(), tuple(), min(), & max())