Utilities for working with data structures like lists, dicts and tuples.

3 Functions → list

Return from an iterable, a list of all the unique elements in the input, but maintaining the order in which they first appear.

Note: All elements in the input must be hashable for this routine to work, as it internally uses a set for efficiency reasons.

Flatten a list of lists (NOT recursive, only works for 2d lists)., size)

Chop a sequence into chunks of the given size.