We've been using a simple container implementation of a mathematical relation (https://simple.wikipedia.org/wiki/Relation_(mathematics)) (i.e. an invertible M:M mapping) for some time. We've been waiting for many years (decades actually) to have this concept incorporated as a standard container in one of the modern programming languages so we could swap our code with a language-standard container. To further these efforts, we have decided to initiate a conversation with the python community on adding a relation as a standard Python container package.
Briefly the uses of a relation are: - quickly finding the values/range associated with keys/domain (e.g. *inversion*) - maintaining a unique relationship between keys and values,(e.g. *isomorphism* or *aliasing*) - using keys to categorize (one-to-many) values (e.g. *partitioning*) - associating two sets in an arbitrary/bipartite manner (e.g. *tagging*) Below is a link to an implementation, including an ipython notebook with light exposition and some canonical examples. We'll also be presenting a poster at SciPy 2015. Let us know if this, or something like it, seems like a worthwhile addition to the standard Python distribution. Thank you, Scott James, James Larkin scott.ja...@noblis.org james.lar...@noblis.org https://github.com/scott-howard-james/relate
-- https://mail.python.org/mailman/listinfo/python-list
