Skip to content

Python fast track

This is the shortest path from an empty Python environment to a working Radixor stemmer. First choose the native runtime. Both installations resolve the separate standard-model package with 31 precompiled language models.

1. Choose and install

python -m pip install --only-binary=:all: radixor-c

Use this package for simple stemming from standard or prepared models. It supports CPython 3.10–3.14.

python -m pip install --only-binary=:all: radixor

Use this package when processing batches or compiling text dictionaries. It supports CPython 3.9 and newer.

2. Stem words

from radixor_c import Stemmer

stemmer = Stemmer("en")
print(stemmer.stem("running"))

from radixor import Stemmer

stemmer = Stemmer("en")

print(stemmer.stem("running"))
print(stemmer.stem_batch(["running", "studies", "cars"]))

Expected first output:

run

stem() and stem_batch() preserve Radixor's original API: a word for which the trie finds no patch command produces None.

3. Use PyStemmer-compatible fallback semantics

For a low-friction migration from PyStemmer, use the compatible method names:

stemmer.stemWord("running")
stemmer.stemWords(["running", "unknown_word"])

These methods return the original input whenever no patch command is found, so their results are always strings rather than None.

With Python (PyO3), import Stemmer is optional and only for zero-source-change migration when PyStemmer is absent; otherwise use from radixor import Stemmer. Python-C uses from radixor_c import Stemmer.

Next