penzene
ChemDraw-style 2D chemical structures from Python, drawn by the same engine as the Penzene desktop app.
import penzene as pz
doc = pz.from_smiles("CC(=O)Oc1ccccc1C(=O)O") # aspirin
doc.clean()
doc.export("aspirin.svg") # identical to the app's export (also .png, .pdf)
doc.save("aspirin.penz") # open and keep editing in the app
doc.formula, doc.mw # ('C9H8O4', 180.16…)
doc # renders inline in Jupyter
# Build with ChemDraw's hotkeys: from H2N-CH3, "42n152o" makes Ala-Ala
m = pz.Document()
n = m.add_atom("N"); c = m.add_atom("C", x=14.4); m.add_bond(n, c)
m.hotkeys(c, "42n152o")
Also: pz.read(path) for .penz, .mol and ChemDraw .cdxml; to_smiles(), to_molblock(), to_inchi(), to_inchikey(), to_svg(), to_png(dpi); doc.style = "RSC" (or "ACS 1996", "JDP"); abbreviations such as add_atom("Boc").
Penzene brings its own copy of Qt. Loading it into a process that already has PySide6 or PyQt (for example Jupyter with a Qt event loop) may conflict; the plain Jupyter kernel is fine.
GPL-3.0.
1 maintainer
Release files for penzene 0.8.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| penzene-0.8.0-cp312-abi3-win_amd64.whl | CPython 3.12 | abi3 | Windows x86-64 | Details |
| penzene-0.8.0-cp312-abi3-manylinux_2_17_x86_64.whl | CPython 3.12 | abi3 | Linux glibc 2.17+ x86-64 | Details |
| penzene-0.8.0-cp312-abi3-macosx_11_0_x86_64.whl | CPython 3.12 | abi3 | macOS 11.0+ x86-64 | Details |
| penzene-0.8.0-cp312-abi3-macosx_11_0_arm64.whl | CPython 3.12 | abi3 | macOS 11.0+ ARM64 | Details |
Total release size: 135.7 MB
Release files / penzene-0.8.0-cp312-abi3-win_amd64.whl
| Download URL | penzene-0.8.0-cp312-abi3-win_amd64.whl |
|---|---|
| Size | 28.1 MB |
| Tags | CPython 3.12 Windows x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
06049d182249cc4609de4fef3cc651e1b2a0b44116f56cdba7a7ad1ffbb437e5
|
|
BLAKE2b-256 checksum How to use checksums |
328c4187ec421ecb39e468450ba7a5ecb61ef911169dcd759a01a82e2ab78655
|
| 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 25, 2026.
Transparency logRelease files / penzene-0.8.0-cp312-abi3-manylinux_2_17_x86_64.whl
| Download URL | penzene-0.8.0-cp312-abi3-manylinux_2_17_x86_64.whl |
|---|---|
| Size | 44.7 MB |
| Tags | CPython 3.12 Linux glibc 2.17+ x86-64 abi3 |
|
SHA-256 checksum How to use checksums |
1e01f4e347f36b2fbedbe368bff111e4356bef7f01511a74e3f3722429b2db2b
|
|
BLAKE2b-256 checksum How to use checksums |
c8c49e735e095811683141b22df23efef17332a757a3c086c583491fb2205ef6
|
| 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 25, 2026.
Transparency logRelease files / penzene-0.8.0-cp312-abi3-macosx_11_0_x86_64.whl
| Download URL | penzene-0.8.0-cp312-abi3-macosx_11_0_x86_64.whl |
|---|---|
| Size | 32.4 MB |
| Tags | CPython 3.12 abi3 macOS 11.0+ x86-64 |
|
SHA-256 checksum How to use checksums |
85669b8c8e788c338c1b6fea151f20f0c2b57f9ad9259c04f02cb9d4495ce59c
|
|
BLAKE2b-256 checksum How to use checksums |
6a0d65ba19ef3cb4a7fbe4f48c45dd9c2c3752f90f9e041eb2ea6276272c24e2
|
| 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 25, 2026.
Transparency logRelease files / penzene-0.8.0-cp312-abi3-macosx_11_0_arm64.whl
| Download URL | penzene-0.8.0-cp312-abi3-macosx_11_0_arm64.whl |
|---|---|
| Size | 30.5 MB |
| Tags | CPython 3.12 abi3 macOS 11.0+ ARM64 |
|
SHA-256 checksum How to use checksums |
5e6b96a9c5bab315fe660be38df6e7fbfe9786da3898b66fe2a75ea716b8168a
|
|
BLAKE2b-256 checksum How to use checksums |
775d8bfc67e116558612c7944d64ee4b34e90269700d4b1b6341f8d27057ec50
|
| 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 25, 2026.
Transparency log
