lme-python

Native Python bindings for lme-rs, a Rust implementation of linear, generalized linear, and nonlinear mixed-effects models modeled after R's lme4 workflow.

Install

pip install lme-python

Published wheels are available for CPython 3.10 on Windows, macOS, and Linux; CI also builds and tests wheels from source on Python 3.10–3.13. The package imports as lme_python and uses Polars DataFrames.

Quick start

import lme_python
import polars as pl

data = pl.DataFrame(
    {
        "y": [10.0, 12.0, 13.0, 15.0, 9.0, 11.0, 14.0, 17.0, 8.0, 10.0, 12.0, 14.0],
        "x": [0.0, 1.0, 2.0, 3.0] * 3,
        "group": ["a"] * 4 + ["b"] * 4 + ["c"] * 4,
    }
)

fit = lme_python.lmer("y ~ x + (1 | group)", data=data, reml=True)
print(fit.summary())
print(fit.predict(data))

The bindings also expose GLMMs (glmer), nonlinear mixed models (nlmer), prediction and simulation, profile and bootstrap confidence intervals, grouped cross-validation, contrasts, Type I/II/III ANOVA, and LMM estimated marginal means with reference-grid pairwise comparisons.

Documentation

Development

Contributor setup, validation commands, and release policy live in the repository's CONTRIBUTING.md. The automated task consumer:smoke gate builds an isolated wheel, installs it into a clean environment, and runs the portable examples against that installed artifact. License-File: THIRD_PARTY_NOTICES.md License-File: RELINKING.md License-File: Apache-2.0.txt License-File: BSD-3-Clause-OpenBLAS.txt License-File: GPL-2.0-or-later.txt License-File: LGPL-2.1-only.txt License-File: Intel-Simplified-Software-License.txt

Project links

Data verified by PyPI on Aug 14, 2026
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Key dates

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  • Released:
Newer release available (0.2.5)

1 maintainer

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GitHub Statistics

Data verified by PyPI on Aug 14, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

Requires

Python >=3.8

Provides Extra

dev

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