🔩 Like builtins, but boltons. 250+ constructs, recipes, and snippets which extend (and rely on nothing but) the Python standard library. Nothing like Michael Bolton.

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README.md

Boltons

boltons should be builtins.

Boltons is a set of over 100 BSD-licensed, pure-Python utilities in the same spirit as — and yet conspicuously missing from — the 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
A full-featured TracebackInfo type, for representing stack traces, in tbutils

Full and extensive docs are available on Read The Docs.

Installation

Boltons can be added to a project in a few ways. There's the obvious one::

    pip install boltons

Then dozens of boltons are just an import away::

    from boltons.cacheutils import LRU
    my_cache = LRU()

However, due to the nature of utilities, application developers might want to consider other options. Boltons is pure-Python and has no dependencies. See the Integration section of the docs for more details.

Third-party packages

The majority of boltons strive to be "good enough" for a wide range of basic uses, leaving advanced use cases to Python's myriad specialized 3rd-party libraries. In many cases the respective boltons module will describe 3rd-party alternatives worth investigating when use cases outgrow boltons. If you've found a natural "next-step" library worth mentioning, see the next section!

Gaps

Found something missing in the standard library that should be in boltons? Found something missing in boltons? First, take a moment to read the very brief architecture statement to make sure the functionality would be a good fit.

Then, if you are very motivated, submit a Pull Request. Otherwise, submit a short feature request on the Issues page, and we will figure something out.