Boltons is a set of over 230 BSD-licensed, pure-Python utilities in the same spirit as — and yet conspicuously missing from — the standard library, including:

- Atomic file saving, bolted on with fileutils - A highly-optimized OrderedMultiDict, in dictutils - Two types of PriorityQueue, in queueutils - Chunked and windowed iteration, in iterutils - Recursive data structure iteration and merging, with iterutils.remap - Exponential backoff functionality, including jitter, through iterutils.backoff - A full-featured TracebackInfo type, for representing stack traces, in tbutils

This package installs the library for Python 3.