spork-pds

spork-pds is the standalone CPython extension behind Spork’s persistent collection values. It has no dependency on the language or runtime and can be used directly from Python.

Install#

python -m pip install "spork-pds==0.1.4"

Published wheels cover supported CPython versions and platforms. A C compiler and Python development headers are required when building the source distribution.

Collection families#

• Vector, Map, and Set provide general persistent sequence, mapping, and set semantics.
• SortedVector retains duplicates in a persistent red-black tree.
• DoubleVector and IntVector store unboxed numeric values and export read-only buffers.
• Cons provides immutable linked-list cells.
• Single-use transients make large controlled update batches efficient.

Persistent operations return new values while sharing unchanged structure. Existing versions remain unchanged. Immutability is shallow: Python objects stored inside a collection retain their own behavior.

Package reference#

• Practical guide
• API reference
• Design and operation costs
• Native free-threading contract
• Benchmark methodology
• Source
• PyPI