Skip to main content

chematic

Pure-Rust cheminformatics library for Python — SMILES parsing, 190+ descriptor values (71 functions), fingerprints, pKa prediction, ADMET profiling, and template-based retrosynthesis.

The current 1.0.21 release line includes the coupled E/Z canonical-SMILES fix; the frozen RDKit 2025.09.3 core-eight descriptor gate and strengthens original-index search accounting, prepared compatible Morgan fingerprints, and the experimental stereo-safe 3D path. Compatibility and performance claims remain operation- and corpus-scoped.

Installation

pip install chematic

Quick Start

import chematic

mol = chematic.from_smiles("CC(=O)Oc1ccccc1C(=O)O")  # aspirin

print(mol.mw)      # 180.16
print(mol.logp)    # 1.31
print(mol.tpsa)    # 63.6
print(mol.qed)     # 0.55

# New descriptors
print(mol.vabc)              # van der Waals volume (no 3D needed)
print(mol.schultz_mti)       # Schultz MTI
print(mol.gutman_mti)        # Gutman MTI*
print(mol.gravitational_index)  # gravitational index

# pKa prediction
print(mol.pka())   # {"most_acidic": 3.49, "most_basic": None}

# ADMET profile
print(mol.admet())
# {"bbb": False, "bbb_score": ..., "caco2": ..., "herg_risk": ..., "cyp3a4_risk": ...}

# Fingerprints (bytes, 2048-bit ECFP4)
fp = mol.ecfp4()

# Tanimoto similarity
mol2 = chematic.from_smiles("c1ccccc1")
sim = chematic.tanimoto(mol.ecfp4(), mol2.ecfp4())

# Natural-language property summary (for LLM / MCP agents)
print(mol.describe())

# Structural diff between two molecules
ibuprofen = chematic.from_smiles("CC(C)Cc1ccc(CC(C)C(=O)O)cc1")
d = mol.diff(ibuprofen)  # {"summary": "...", "delta_mw": 66.1, "delta_logp": 2.75, ...}

# SVG / PDF / EPS depiction
svg = mol.to_svg()
pdf_bytes = mol.to_pdf()   # bytes; requires pdf feature
eps_str   = mol.to_eps()   # PostScript string

# ChemicalJSON (Avogadro 2 / MolSSI)
cjson_str = mol.to_cjson(coords=[])   # coords: list of (x,y,z) tuples, optional
mol2, coords = chematic.from_cjson(cjson_str)

# Template-based retrosynthesis (60 retro-SMIRKS templates)
mol3 = chematic.from_smiles("CC(=O)Nc1ccccc1")  # acetanilide
results = mol3.retro_disconnect(max_results=5)
for r in results:
    print(r["template"], "→", r["precursors"])
# amide_secondary → ['CC(=O)O', 'Nc1ccccc1']

# Filter by reaction class
amides = mol3.retro_disconnect(reaction_class="AmideBond")

# Bulk substructure match against a pre-parsed Mol list (returns indices)
mols = [chematic.from_smiles(s) for s in ["CCO", "c1ccccc1O", "CC(=O)O"]]
hits = chematic.bulk.substructure_match("[OH]", mols)  # → [0, 1, 2]

# All descriptors as a dict (for Pandas)
import pandas as pd
smiles = ["CCO", "c1ccccc1", "CC(=O)O"]
df = pd.DataFrame([chematic.from_smiles(s).descriptors() for s in smiles])

# Opt-in v2 embedding pipeline: torsion-knowledge-aware distance geometry +
# stereo verification/repair + policy-gated force field, with full per-stage
# evidence (never just final coordinates)
config = chematic.PipelineV2Config.safe(
    force_field="mmff94_with_uff_fallback",
    stereo_policy="repair_and_verify",
    ring_torsion_policy="fail_closed",
)
try:
    result = mol.embed_pipeline_v2(config)
    coords = result["coords"]                       # same atom order as mol
    print(result["force_field"]["actual_force_field_used"])  # fallback if MMFF94 lacked params
    print(result["final_validation"]["sound"])
except chematic.PipelineV2Error as e:
    print(e.diagnostics["stage"], e.diagnostics["cause"])   # structured, not just a message

Features

  • Zero C/C++ dependencies — pure Rust, no RDKit or OpenBabel required
  • SMILES / MOL / SDF / ChemicalJSON parsing and writing
  • 190+ descriptor values (70+ functions; several return vectors): MW, LogP, TPSA, QED, Fsp3, SA Score, HBD, vabc, schultz_mti, gutman_mti, and gravitational_index. RDKit agreement is metric-specific; see the validation report.
  • 14 fingerprint algorithms: ECFP2/4/6, FCFP4/6, MACCS, AtomPair, Torsion, …
  • pKa prediction (15 SMARTS rules — unique to chematic)
  • ADMET profile: BBB, Caco-2, hERG, CYP3A4
  • Template-based retrosynthesis: mol.retro_disconnect() — 60 retro-SMIRKS templates, SA Score ranked
  • SMARTS substructure searchchematic.smarts_match() and bulk.substructure_match(smarts, mols) (pre-parsed Mol list, returns indices)
  • SVG / PDF / EPS depiction: mol.to_svg(), mol.to_pdf(), mol.to_eps()
  • ChemicalJSON: mol.to_cjson(coords=[]), chematic.from_cjson(s) — Avogadro 2 / MolSSI compatible
  • Opt-in v2 embedding pipeline: mol.embed_pipeline_v2(config) — torsion-knowledge-aware distance geometry, stereo verify/repair, and policy-gated force field (PipelineV2Config), returning full per-stage evidence (embed stats, torsion knowledge/optimization reports, stereo before/after, force-field actual policy and fallback, final geometry validation, stage timings) instead of just coordinates; raises chematic.PipelineV2Error with structured .diagnostics on failure

RDKit compatibility

The operation/profile boundaries and measured oracle lanes are listed in the Compatibility Contract dashboard. For persisted fingerprints, saved indices, canonical identity, stereo, and browser/Worker migration decisions, read the RDKit migration guide before changing a production workflow. Native ECFP and RDKit-compatible Morgan are separate profiles; rebuild stored fingerprints and indices under the chosen profile.

chematic.rdkit_compat provides a lightweight RDKit-compatible subset for environments where RDKit is unavailable (WASM, serverless, conda-free CI):

from chematic import rdkit_compat as Chem
from chematic.rdkit_compat import Descriptors, rdMolDescriptors, DataStructs

mol = Chem.MolFromSmiles("CC(=O)Oc1ccccc1C(=O)O")

# Descriptors
Descriptors.MolWt(mol)          # 180.16
rdMolDescriptors.CalcTPSA(mol)  # 63.6

# Fingerprint (ExplicitBitVect) with bitInfo
bitInfo = {}
fp = rdMolDescriptors.GetMorganFingerprintAsBitVect(mol, 2, nBits=2048, bitInfo=bitInfo)
fp.GetNumBits()                         # 2048
bitInfo                                 # {bit: ((atom_idx, radius), ...)}
DataStructs.TanimotoSimilarity(fp, fp)  # 1.0
DataStructs.BulkTanimotoSimilarity(fp, [fp])  # [1.0]

import numpy as np
arr = DataStructs.ConvertToNumpyArray(fp)  # (2048,) int8 for sklearn / PyTorch

# Atom / Bond traversal
for atom in mol.GetAtoms():
    atom.GetSymbol(), atom.GetAtomicNum(), atom.IsInRing()
for bond in mol.GetBonds():
    bond.GetBondType(), bond.GetBondTypeAsDouble(), bond.IsInRing()

# Ring information
ri = mol.GetRingInfo()
ri.NumRings()       # 1
ri.AtomRings()      # tuple of tuples of atom indices
ri.NumAtomRings(0)  # rings containing atom 0

# SDF I/O with SD properties
with Chem.SDWriter("out.sdf") as w:
    mol.SetProp("ID", "aspirin")
    w.write(mol)
for m in Chem.SDMolSupplier("out.sdf"):
    print(m.GetProp("ID"))

Unsupported options raise NotImplementedError or TypeError — they are never silently ignored.

Compatibility matrix

Area Status Notes
SMILES I/O ✅ Supported MolFromSmiles (aromaticity perceived when sanitize=True) / MolToSmiles
SDF I/O ✅ Supported SDMolSupplier / SDWriter + SD properties
Mol properties ✅ Supported Get/Set/Has/ClearProp, typed setters, GetPropsAsDict
Mol / Atom / Bond ✅ Supported read-only traversal (GetAtoms/GetBonds/GetAtomWithIdx/…)
RingInfo ✅ Supported SSSR-based; NumRings/AtomRings/BondRings/NumAtomRings/NumBondRings
Substructure 🟡 Partial SMARTS via chematic; match order may differ from RDKit (use set comparison)
Descriptors ✅ Supported MW/HBA/HBD exact, TPSA ±1.0, LogP ±0.5 vs RDKit (differential-tested)
Morgan fingerprint 🟡 Partial nBits folding + bitInfo shape-/origin-consistent, not RDKit bit-identical (FNV-1a vs MurmurHash)
DataStructs ✅ Supported TanimotoSimilarity/DiceSimilarity/BulkTanimotoSimilarity/ConvertToNumpyArray
RWMol / editing ❌ Unsupported read-only layer
useFeatures, useBondTypes=False 🔊 Fails loudly raise NotImplementedError instead of silently ignoring

A live differential suite (tests/test_rdkit_diff.py, auto-skipped when RDKit is absent) compares chematic against RDKit across descriptors, ring counts, SMARTS match counts, SDF round-trips, and Morgan self-similarity, writing an explainable diff to validation/results/rdkit_diff.jsonl.

chematic.rdkit_compat is not a full RDKit clone — it is a lightweight RDKit-compatible subset for common 2D cheminformatics workflows. See the full RDKit migration guide (compatibility matrix, differential-validation results, known divergences, and runnable examples).

License

MIT OR Apache-2.0

Release files for chematic 1.0.21

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

Source distribution (sdist)

Source distribution for chematic 1.0.21
File Size Uploaded
chematic-1.0.21.tar.gz 4.1 MB Details

Built distributions (wheels)

Table of built distributions (wheels) for chematic 1.0.21
File
chematic-1.0.21-cp313-cp313-win_amd64.whl CPython 3.13 CPython 3.13 Windows x86-64 Details
chematic-1.0.21-cp313-cp313-macosx_11_0_arm64.whl CPython 3.13 CPython 3.13 macOS 11.0+ ARM64 Details
chematic-1.0.21-cp313-cp313-macosx_10_12_x86_64.whl CPython 3.13 CPython 3.13 macOS 10.12+ x86-64 Details
chematic-1.0.21-cp312-cp312-win_amd64.whl CPython 3.12 CPython 3.12 Windows x86-64 Details
chematic-1.0.21-cp312-cp312-macosx_11_0_arm64.whl CPython 3.12 CPython 3.12 macOS 11.0+ ARM64 Details
chematic-1.0.21-cp312-cp312-macosx_10_12_x86_64.whl CPython 3.12 CPython 3.12 macOS 10.12+ x86-64 Details
chematic-1.0.21-cp311-cp311-win_amd64.whl CPython 3.11 CPython 3.11 Windows x86-64 Details
chematic-1.0.21-cp311-cp311-macosx_11_0_arm64.whl CPython 3.11 CPython 3.11 macOS 11.0+ ARM64 Details
chematic-1.0.21-cp311-cp311-macosx_10_12_x86_64.whl CPython 3.11 CPython 3.11 macOS 10.12+ x86-64 Details
chematic-1.0.21-cp310-cp310-win_amd64.whl CPython 3.10 CPython 3.10 Windows x86-64 Details
chematic-1.0.21-cp310-cp310-macosx_11_0_arm64.whl CPython 3.10 CPython 3.10 macOS 11.0+ ARM64 Details
chematic-1.0.21-cp310-cp310-macosx_10_12_x86_64.whl CPython 3.10 CPython 3.10 macOS 10.12+ x86-64 Details
chematic-1.0.21-cp39-cp39-win_amd64.whl CPython 3.9 CPython 3.9 Windows x86-64 Details
chematic-1.0.21-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl CPython 3.9 CPython 3.9 Linux glibc 2.17+ x86-64 Details
chematic-1.0.21-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl CPython 3.9 CPython 3.9 Linux glibc 2.17+ ARM64 Details
chematic-1.0.21-cp39-cp39-macosx_11_0_arm64.whl CPython 3.9 CPython 3.9 macOS 11.0+ ARM64 Details
chematic-1.0.21-cp39-cp39-macosx_10_12_x86_64.whl CPython 3.9 CPython 3.9 macOS 10.12+ x86-64 Details

Total release size: 94.2 MB

Release files / chematic-1.0.21.tar.gz

Download URL chematic-1.0.21.tar.gz
Size 4.1 MB
Tags Source
SHA-256 checksum
How to use checksums
f8366e7530889b0d0d719b40e0def9191310f781bf7883e3beec2d0f566c1aa5
BLAKE2b-256 checksum
How to use checksums
13ba67121dcc749914c7f08aa1c747dca29c5900cc056405ece1193a84fc738f
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp313-cp313-win_amd64.whl

Download URL chematic-1.0.21-cp313-cp313-win_amd64.whl
Size 5.4 MB
Tags CPython 3.13 Windows x86-64
SHA-256 checksum
How to use checksums
ca6f27dd450ba85ea025c23187ee3940b7e2195b0819aaf5337052c810d0c5e0
BLAKE2b-256 checksum
How to use checksums
0cbe8061d642a5c8a74f2b05214310206e7084cf6baf09fd28b7ad7c7d34741f
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp313-cp313-macosx_11_0_arm64.whl

Download URL chematic-1.0.21-cp313-cp313-macosx_11_0_arm64.whl
Size 5.1 MB
Tags CPython 3.13 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
b410a2c1d1b564d5216e060a4d0269976c01df132579646b697369a397bfd29b
BLAKE2b-256 checksum
How to use checksums
6a50beb36bbd7e3b433cd836aa1ded35c5ec510bc88c674436f1e2ae0db5565f
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp313-cp313-macosx_10_12_x86_64.whl

Download URL chematic-1.0.21-cp313-cp313-macosx_10_12_x86_64.whl
Size 5.4 MB
Tags CPython 3.13 macOS 10.12+ x86-64
SHA-256 checksum
How to use checksums
db09ba36116a52161795cbda3d18d32cb4d0aed0155bbe61ed4c8c6a584d68ee
BLAKE2b-256 checksum
How to use checksums
38e3b0029b712c86077f0e5c84a9b3d018fb9c8c5763248761b9312b50943cd6
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp312-cp312-win_amd64.whl

Download URL chematic-1.0.21-cp312-cp312-win_amd64.whl
Size 5.4 MB
Tags CPython 3.12 Windows x86-64
SHA-256 checksum
How to use checksums
dd245295ae707b9cd870d1d76c94b71e82842d8055464a0ecba157f2fcc77d51
BLAKE2b-256 checksum
How to use checksums
bd53847f03c371f01cf697f2f5cecbd110189c687b76058b5edc7793d5640e90
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp312-cp312-macosx_11_0_arm64.whl

Download URL chematic-1.0.21-cp312-cp312-macosx_11_0_arm64.whl
Size 5.1 MB
Tags CPython 3.12 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
bfc69d8bcd4ab1c5c9a48eee8230cb2763f0d9c84abaf63729c74a431a1e3e59
BLAKE2b-256 checksum
How to use checksums
e089c14dd023d99c403ba364c3b7ba1c5c685c9c0801c34a47c32b220af713cc
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp312-cp312-macosx_10_12_x86_64.whl

Download URL chematic-1.0.21-cp312-cp312-macosx_10_12_x86_64.whl
Size 5.4 MB
Tags CPython 3.12 macOS 10.12+ x86-64
SHA-256 checksum
How to use checksums
bc59dd8ef75090e4da7695b0e10f89262715063aa2f00e79b65d50c4e357b38b
BLAKE2b-256 checksum
How to use checksums
1a2466c85de3d7384f1b6aa5a400d68d8af5b65fbf6b335f0508a0da63d652d8
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp311-cp311-win_amd64.whl

Download URL chematic-1.0.21-cp311-cp311-win_amd64.whl
Size 5.4 MB
Tags CPython 3.11 Windows x86-64
SHA-256 checksum
How to use checksums
a3651091d58d7b9065b8e09df40af90fc777e32ee6ca509524a26795ee4341f0
BLAKE2b-256 checksum
How to use checksums
08fae7eb115f2257ad3f5240ccb064eb1b204ef202423a0c358c1d545dfa06b6
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp311-cp311-macosx_11_0_arm64.whl

Download URL chematic-1.0.21-cp311-cp311-macosx_11_0_arm64.whl
Size 5.1 MB
Tags CPython 3.11 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
26c661744eb421bb5af24b0d004dbac1a4347b501475504ce528d5b5f0a4781a
BLAKE2b-256 checksum
How to use checksums
075593557cbe342fd656f756787371aca1b4c9251a231b71d75f664e5279d661
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp311-cp311-macosx_10_12_x86_64.whl

Download URL chematic-1.0.21-cp311-cp311-macosx_10_12_x86_64.whl
Size 5.4 MB
Tags CPython 3.11 macOS 10.12+ x86-64
SHA-256 checksum
How to use checksums
4dca3debaeb32f738435201dbf22402653858cc5225b9286a0bf6e9960f6e25b
BLAKE2b-256 checksum
How to use checksums
47259339b321747ac86a3179920f0cd0a8b262476d9a383bdcf2d02423a3ab97
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp310-cp310-win_amd64.whl

Download URL chematic-1.0.21-cp310-cp310-win_amd64.whl
Size 5.4 MB
Tags CPython 3.10 Windows x86-64
SHA-256 checksum
How to use checksums
c5b3555e6648adb4e74af4040992b37ea3749aa865d28acb22a046ab11c189b5
BLAKE2b-256 checksum
How to use checksums
6358ef3f2fdf39fc7ce8e508adf5d208034e39b9eceb6ebe17d85e236fd9e2d1
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp310-cp310-macosx_11_0_arm64.whl

Download URL chematic-1.0.21-cp310-cp310-macosx_11_0_arm64.whl
Size 5.1 MB
Tags CPython 3.10 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
ff88ea294a864e3b384a01fac465f6322779fe959ee3a529454876d3ea35c8fb
BLAKE2b-256 checksum
How to use checksums
519715e6619a27a3ab7095d2295938ced0c764cf6ccff3a205d3fa726957dfd4
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp310-cp310-macosx_10_12_x86_64.whl

Download URL chematic-1.0.21-cp310-cp310-macosx_10_12_x86_64.whl
Size 5.4 MB
Tags CPython 3.10 macOS 10.12+ x86-64
SHA-256 checksum
How to use checksums
24bb9a16020495b18e7fc6568b289cb46173945ddcdf849373f21a51eb93854d
BLAKE2b-256 checksum
How to use checksums
af00f4cba99ef547eb2fdb9f525464c098d4163c2612ed68621fce7493febe52
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp39-cp39-win_amd64.whl

Download URL chematic-1.0.21-cp39-cp39-win_amd64.whl
Size 5.4 MB
Tags CPython 3.9 Windows x86-64
SHA-256 checksum
How to use checksums
1775040b0f1857f4c38c7cb0239d779e8f55d09e6b2ea128555c033ffd246c52
BLAKE2b-256 checksum
How to use checksums
dcc553f6323076ee3f3e9b13ad73783f28e6d21b90e83eaa2d6a88f64e9cb700
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

Download URL chematic-1.0.21-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Size 5.6 MB
Tags CPython 3.9 Linux glibc 2.17+ x86-64
SHA-256 checksum
How to use checksums
8b6ea94b895a4cdbade4ceb7901c904a99f85fadc25b723c8cce5c3d11c00e71
BLAKE2b-256 checksum
How to use checksums
262756f1b4840d1185313027bf1601256ad09e755a4e914be3432d8d37c1fc37
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL chematic-1.0.21-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size 5.3 MB
Tags CPython 3.9 Linux glibc 2.17+ ARM64
SHA-256 checksum
How to use checksums
c446e8fd658413a30c89ade65d681ca05110d4f7525e0ac1fa2b30cccea9dbbf
BLAKE2b-256 checksum
How to use checksums
8c78feaab3170bbffcb7e78c9f1397fd84c8977d6c6c65507177212a9ef2e1fa
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp39-cp39-macosx_11_0_arm64.whl

Download URL chematic-1.0.21-cp39-cp39-macosx_11_0_arm64.whl
Size 5.1 MB
Tags CPython 3.9 macOS 11.0+ ARM64
SHA-256 checksum
How to use checksums
de98f6095b5f8e4671c0db12461dcb114d0b81f9309bf35c5fbdb286b727b919
BLAKE2b-256 checksum
How to use checksums
27a36b42da439e85ab830c01dafe3d3268c2decf92cfb6ce39f65a4df2965fd6
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release files / chematic-1.0.21-cp39-cp39-macosx_10_12_x86_64.whl

Download URL chematic-1.0.21-cp39-cp39-macosx_10_12_x86_64.whl
Size 5.4 MB
Tags CPython 3.9 macOS 10.12+ x86-64
SHA-256 checksum
How to use checksums
235e8f17ef3f03618c61682b8f360bfd007527ad4d35d641d63826a5ef513c26
BLAKE2b-256 checksum
How to use checksums
8cfad44b2a43d185f7c0d309135dcda1f3fcb42583b25bb16a28844e000add7e
Upload date
Uploaded using Trusted Publishing?
What is trusted publishing?
Yes
Uploaded via twine/7.0.0 CPython/3.13.14

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 Sep 23, 2026.

Transparency log

Release history Release notifications | RSS feed

This release

1.0.21 This release

18 release files

0.9.0

18 release files

0.8.1

18 release files

0.8.0

18 release files

0.7.0

18 release files

0.6.0

18 release files

0.5.0

18 release files

0.4.9

18 release files

0.4.8

18 release files

0.4.7

18 release files

0.4.6

6 release files

0.4.5

6 release files

0.4.4

6 release files

0.4.0

6 release files

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