List Comprehensions

a syntactic construct for creating a list based on existing lists, analogous to the set-builder notation (Set Comprehension) http://en.wikipedia.org/wiki/List_comprehension

Python-specific bits

• see Generator

• http://docs.python.org/tut/node7.html#SECTION007140000000000000000 List comprehensions provide a concise way to create lists without resorting to use of map(), filter() and/or lambda. The resulting list definition tends often to be clearer than lists built using those constructs.

• http://www.python.org/dev/peps/pep-0202/

• http://www.secnetix.de/~olli/Python/list_comprehensions.hawk

• http://www.diveintopython.org/native_data_types/mapping_lists.html