Skip to main content
Pre-release

This release is a pre-release and may not be stable for production use.

molcrafts-molrs

PyPI

Python bindings for the molrs molecular modeling toolkit.

This package is the first public preview of the Python API. Install with pip install molcrafts-molrs and import it as molrs.

Full documentation lives at https://molcrafts.github.io/molrs/. The Python API reference is rendered at https://molcrafts.github.io/molrs/reference/python/.

Install

pip install molcrafts-molrs

Quick start

import numpy as np
import molrs

# Parse SMILES and generate 3D coordinates
ir = molrs.parse_smiles("CCO")
mol = ir.to_atomistic()
result = molrs.generate_3d(mol, molrs.EmbedOptions(speed="fast", seed=42))
frame = result.mol.to_frame()

# Build a system from scratch
frame = molrs.Frame()
atoms = molrs.Block()
atoms.insert("x", np.array([0.0, 0.96, -0.24], dtype=np.float64))
atoms.insert("y", np.array([0.0, 0.0, 0.93], dtype=np.float64))
atoms.insert("z", np.zeros(3, dtype=np.float64))
atoms.insert("element", ["O", "H", "H"])
frame["atoms"] = atoms

Support

  • Python 3.9+
  • pip install molcrafts-molrs
  • import molrs
  • Offline API help is available with help(molrs.Frame) and related symbols

API

Data model

  • Frame — dict-like container of named Blocks + optional Box
  • Block — column store backed by numpy arrays
  • Box — simulation box with periodic boundaries

I/O

  • molrs.read_pdb(path) / molrs.read_xyz(path) → Frame
  • molrs.parse_smiles(smiles) → SmilesIR → .to_frame()

Neighbor search and analysis

nq = molrs.NeighborQuery(box, positions, cutoff=5.0)
nlist = nq.query_self()

from molrs.compute.density import RDF
rdf = RDF(100, 5.0)
result = rdf.compute(frame, nlist)

Force field

typifier = molrs.MMFFTypifier()
potentials = typifier.build(atomistic)

Development

maturin build
pip install target/wheels/*.whl
pytest -q
Component Version
Python 3.9+
PyO3 Managed by molrs-python/Cargo.toml
maturin 1.x

License

BSD-3-Clause

Metadata

Release files for molcrafts-molrs-nightly 0.0.17.dev202606072259

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distributions (wheels)

Table of built distributions (wheels) for molcrafts-molrs-nightly 0.0.17.dev202606072259
File Interpreter ABI Platform
molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-win_amd64.whl CPython 3.12 abi3 Windows x86-64 Details
molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl CPython 3.12 abi3 Linux glibc 2.17+ x86-64 Details
molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl CPython 3.12 abi3 macOS 11.0+ ARM64, macOS 10.12+ universal2 (ARM64, x86-64), macOS 10.12+ x86-64 Details

Total release size: 17.4 MB

Release files / molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-win_amd64.whl

Download URL molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-win_amd64.whl
Size 3.8 MB
Tags CPython 3.12 Windows x86-64 abi3
SHA-256 checksum
How to use checksums
1110ba0f6d6e8ef640cf77fa47258c921ed812f06aceb81ad0d2822d04c73424
BLAKE2b-256 checksum
How to use checksums
1e8e31f37d7bd747c8f36a5e176e0237b04b774dce85860c5b360bf41fe335f9
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/6.1.0 CPython/3.13.12

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Jun 7, 2026.

Transparency log

Release files / molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

Download URL molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Size 4.9 MB
Tags CPython 3.12 Linux glibc 2.17+ x86-64 abi3
SHA-256 checksum
How to use checksums
1184a75ebfd16cc1e7a1b6674570bf3ef82e9d7d9d25fba2d383a6733de3b5a5
BLAKE2b-256 checksum
How to use checksums
d4a933fd5caca6430b04e3134c6c95db03e57045e54444495e3223342c7caab7
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/6.1.0 CPython/3.13.12

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Jun 7, 2026.

Transparency log

Release files / molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl

Download URL molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl
Size 8.7 MB
Tags CPython 3.12 abi3 macOS 10.12+ universal2 (ARM64, x86-64) macOS 10.12+ x86-64 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
1331205f4d575caea83d56ebcfde3a63663810e1881c58c87e8ed71c884e790f
BLAKE2b-256 checksum
How to use checksums
309f72dc704adce9d4645587da76e85ba9b2b99c6216ac9b44062ceedfd3ed3e
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/6.1.0 CPython/3.13.12

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Jun 7, 2026.

Transparency log

Security for molcrafts-molrs-nightly 0.0.17.dev202606072259

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

Full provenance

All 3 files in this release have been uploaded with provenance metadata.

Select from 3 files

Attestation for molcrafts_molrs_nightly-0.0.17.dev202606072259-cp312-abi3-win_amd64.whl

PyPI Publish Attestation

PyPI verified that this artifact, at this checksum, originated from the publisher listed below.

Signed by GitHub Actions, verified by PyPI on Jun 7, 2026.

Transparency log

A note on package security

PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.

To learn more about protecting yourself from malicious actors, visit our package security documentation.

Release history Release notifications | RSS feed

Anthropic, PBC Visionary sponsor Bloomberg Visionary sponsor Hudson River Trading Visionary sponsor Meta Visionary sponsor NVIDIA Visionary sponsor Microsoft Sustainability sponsor Depot Continuous Integration AWS Cloud computing and Security Sponsor Datadog Monitoring Fastly CDN Google Download Analytics Sentry Error logging StatusPage Status page