update pcodec by mwlon · Pull Request #817 · zarr-developers/numcodecs

mwlon · 2026-02-12T12:41:24Z

Fixes #815 . Updated to >=v1, which has various improvements.

Signed-off-by: mwlon <[email protected]>

codecov · 2026-02-12T12:44:15Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (53e5157) to head (40f1bfc).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #817   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           27        27           
  Lines          901       905    +4     
=========================================
+ Hits           901       905    +4

Files with missing lines	Coverage Δ
src/numcodecs/pcodec.py	`100.00% <100.00%> (ø)`

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Signed-off-by: mwlon <[email protected]>

mwlon · 2026-02-15T14:32:48Z

CI appears to be failing for unrelated reasons.

DimitriPapadopoulos · 2026-04-12T09:33:20Z

I understand pcodec now supports Python 3.14. Could you address this comment?

numcodecs/.github/workflows/ci.yaml

Lines 52 to 57 in 1fdde70

    
                     # TODO: Remove this conditional when pcodec supports Python 3.14 
        
                     if [[ "${{ matrix.python-version }}" == "3.14" ]]; then 
        
                       python -m pip install -v ".[test,test_extras,msgpack,google_crc32c,crc32c,zfpy]" 
        
                     else 
        
                       python -m pip install -v ".[test,test_extras,msgpack,google_crc32c,crc32c,pcodec,zfpy]" 
        
                     fi

Also, please rebase to resolve conflicts and hopefully fix CI failures.

Signed-off-by: mwlon <[email protected]>

mwlon · 2026-04-13T00:03:14Z

@DimitriPapadopoulos keen eye, updated ci.yaml.

mwlon · 2026-04-15T22:59:37Z

@DimitriPapadopoulos want to review this?

DimitriPapadopoulos

I assume the update (and hence the suggested deprcation warning) should be part of the next minor release, not a patch release.

As far as I can see, pcodec does not require specific, recent versions of Python. Therefore, I am confident it supports requires-python = ">=3.12".

I haven't found the time to understand the details of the new fixture yet. Can you perhaps explain why there's no fixture/pcodec/array.10.npy file and what the filtered warning caused by "old fixture files" is about? Is it not possible to update the fixture files?

Signed-off-by: mwlon <[email protected]>

mwlon · 2026-04-18T12:36:33Z

@DimitriPapadopoulos To answer your questions:

Yes, pcodec supports >= python 3.12 (and <= 3.14 at the moment)
There's no new .npy because we didn't add any new arrays - we only added a new codec. The test runs the Cartesian product of arrays x codecs.

Should be ready for review again, except CI is again failing for unrelated reasons on Linux.

DimitriPapadopoulos · 2026-05-14T08:03:36Z

@mwlon Could you rebase? It should fix the CI errors.

mwlon · 2026-05-15T12:00:48Z

@DimitriPapadopoulos looks like @d-v-b merged main into this for us. Can we merge into main now?

agriyakhetarpal · 2026-06-18T14:44:56Z

Hi! The error should be unrelated; it came from pytest-dev/pytest#14591 via pytest-9.1.0. That is already resolved and fixed in pytest-9.1.1 (edit: sorry, looks like 9.1.1 is not out just yet, but is coming).

d-v-b · 2026-06-18T19:58:18Z

thanks all! sorry for the delay. this will be in the next release of numcodecs.

Restructure the Unreleased section into a 0.17.0 release section with Breaking changes / Deprecations / Maintenance headings. - Add missing entries for the Python 3.12 / NumPy 2.0 minimums (zarr-developers#834) and the pcodec 1.x update (zarr-developers#817), neither of which was documented. - Move the tests relocation (zarr-developers#829) and the removal of DISABLE_NUMCODECS_CEXT (zarr-developers#826) from Maintenance to Breaking changes, and note that tests are still shipped in the sdist. - Document the delta_spec="none" -> "no_op" deprecation (zarr-developers#817). - Fix leftover RST roles (:user:/:issue:) from the Markdown conversion, which do not render under MyST, and convert RST literal blocks to fenced code. - Add entries for the remaining maintenance PRs since v0.16.5. Assisted-by: ClaudeCode:claude-opus-5 Co-Authored-By: Claude Opus 5 <[email protected]>

Restructure the Unreleased section into a 0.17.0 release section with Breaking changes / Deprecations / Maintenance headings. - Add missing entries for the Python 3.12 / NumPy 2.0 minimums (#834) and the pcodec 1.x update (#817), neither of which was documented. - Move the tests relocation (#829) and the removal of DISABLE_NUMCODECS_CEXT (#826) from Maintenance to Breaking changes, and note that tests are still shipped in the sdist. - Document the delta_spec="none" -> "no_op" deprecation (#817). - Fix leftover RST roles (:user:/:issue:) from the Markdown conversion, which do not render under MyST, and convert RST literal blocks to fenced code. - Add entries for the remaining maintenance PRs since v0.16.5. Assisted-by: ClaudeCode:claude-opus-5 Co-authored-by: Claude Opus 5 <[email protected]>

mwlon added 2 commits February 12, 2026 07:38

update pcodec

3fc1648

Signed-off-by: mwlon <[email protected]>

add no_op to test

c0f0150

Signed-off-by: mwlon <[email protected]>

mwlon added 4 commits February 12, 2026 07:58

new test fixture

e0275c9

Signed-off-by: mwlon <[email protected]>

ignore line for legacy code

63f05e9

Signed-off-by: mwlon <[email protected]>

make none legal to avoid API change

caa6064

Signed-off-by: mwlon <[email protected]>

ignore unpickling deprecation warnings

097931e

Signed-off-by: mwlon <[email protected]>

mwlon added 2 commits April 12, 2026 19:59

Merge branch 'main' into pcodec-v1

e9c3f9f

update ci.yaml

737c92e

Signed-off-by: mwlon <[email protected]>

DimitriPapadopoulos reviewed Apr 16, 2026

View reviewed changes

Comment thread src/numcodecs/pcodec.py Resolved

Comment thread src/numcodecs/pcodec.py Resolved

mwlon added 2 commits April 18, 2026 08:26

deprecation warnings

de5d48a

Signed-off-by: mwlon <[email protected]>

format

686e8be

Signed-off-by: mwlon <[email protected]>

Merge branch 'main' into pcodec-v1

d4e7b27

agriyakhetarpal mentioned this pull request May 15, 2026

Add Pyodide/WASM support in CI for numcodecs #529

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5 of 7 tasks

Merge branch 'main' into pcodec-v1

8d4d494

Merge branch 'main' into pcodec-v1

40f1bfc

d-v-b approved these changes Jun 18, 2026

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d-v-b merged commit f3d6187 into zarr-developers:main Jun 18, 2026
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d-v-b mentioned this pull request Sep 17, 2026

docs: release notes for 0.17.0 #859

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update pcodec - #817

update pcodec#817
d-v-b merged 13 commits into
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