Siphon is a collection of Python utilities for downloading data from Unidata data technologies. See our support page for ways to get help with Siphon.
Siphon follows semantic versioning in its version number. With our current 0.x version, that implies that Siphon’s APIs (application programming interfaces) are still evolving (we won’t break things just for fun, but many things are still changing as we work through design issues). Also, for a version 0.x.y, we change x when we release new features, and y when we make a release with only bug fixes.
We support Python >= 3.11.
Important Links
Source code repository: https://github.com/Unidata/siphon
HTML Documentation: http://unidata.github.io/siphon/
Unidata Python Gallery: https://unidata.github.io/python-gallery/
Issue tracker: http://github.com/Unidata/siphon/issues
“python-siphon” tagged questions on Stack Overflow: https://stackoverflow.com/questions/tagged/python-siphon
Gitter chat room: https://gitter.im/Unidata/siphon
Dependencies
numpy>=1.25.0
pandas>=2.1.0
protobuf>=4.24.3
requests>=2.30.0
Developer Dependencies
pytest
vcrpy
flake8
Metadata
Release files for siphon 0.11.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| siphon-0.11.0.tar.gz | 3.4 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| siphon-0.11.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 3.4 MB
Release files / siphon-0.11.0.tar.gz
| Download URL | siphon-0.11.0.tar.gz |
|---|---|
| Size | 3.4 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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|
BLAKE2b-256 checksum How to use checksums |
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|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 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 Jul 20, 2026.
Transparency logRelease files / siphon-0.11.0-py3-none-any.whl
| Download URL | siphon-0.11.0-py3-none-any.whl |
|---|---|
| Size | 67.6 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
cae87154a4464c4aaa27f151e165bef096eae0717f7b1ab4f88ce3fcac83928c
|
|
BLAKE2b-256 checksum How to use checksums |
b5e77a1c789a1c0a248043077aff6f350c353c3679f4f0c9432c6618c2fbbcb9
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 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 Jul 20, 2026.
Transparency log
