ImportError+cannot+import+name+PlasmaStoreFull+from+pyarrow+lib

Not specified by the original author.

TL;DR: your pandarallel is too old for your pyarrow. pyarrow removed its Plasma store, so upgrade pandarallel to a release that no longer uses it, or pin an older pyarrow.

The error

ImportError: cannot import name 'PlasmaStoreFull' from 'pyarrow.lib'

Fix it

1. Upgrade pandarallel:

   pip install -U pandarallel

   Expected: installs a release fixed for modern pyarrow.

2. Verify:

   python -c "import pandarallel; print('ok')"

   Expected: imports cleanly.

3. Workaround if you cannot upgrade pandarallel: pin pyarrow below the Plasma removal:

   pip install "pyarrow<12"

   Expected: the old name exists again.

When this applies

Use this when import pandarallel raises this error with a recent pyarrow.

When it does not apply

If your own code uses pyarrow.plasma, migrate off Plasma entirely; it is gone for good. If pandarallel is current, reinstall it.

Compatibility

pandarallel releases before the Plasma fix; pyarrow 12+ where Plasma was removed.

Root cause

pyarrow deprecated its Plasma in-memory object store and removed it in pyarrow 12. pandarallel imported PlasmaStoreFull from pyarrow.lib, so the removal broke it at import time.

Edge cases

Pinning old pyarrow conflicts with pandas versions that need new pyarrow; upgrading pandarallel is the durable fix. Plasma is unmaintained upstream, so no future pyarrow will bring it back.

GitHub issue nalepae/pandarallel#48 reports ImportError: cannot import name 'PlasmaStoreFull' from 'pyarrow.lib' with a modern pyarrow installed. The verified resolution: pyarrow removed its Plasma in-memory store, so old pandarallel (which imported PlasmaStoreFull) broke at import; the fix is upgrading pandarallel to a release that no longer uses Plasma, or pinning an older pyarrow as a workaround. Full thread: https://github.com/nalepae/pandarallel/issues/48

Not specified by the original author.

TL;DR: your pyscenic is too old for your pyarrow. pyarrow removed FeatherReader, so upgrade pyscenic to a compatible release, or pin an older pyarrow.

The error

ImportError: cannot import name 'FeatherReader' from 'pyarrow.feather'

Fix it

1. Upgrade pyscenic:

   pip install -U pyscenic

   Expected: installs a release that works with your pyarrow.

2. Verify:

   python -c "import pyscenic; print('ok')"

   Expected: imports cleanly.

3. Workaround if you cannot upgrade pyscenic: pin pyarrow to a version that still ships FeatherReader:

   pip install "pyarrow<8"

   Expected: the old class exists again.

When this applies

Use this when import pyscenic raises this error with a recent pyarrow.

When it does not apply

If your own code uses FeatherReader, switch to pyarrow.feather.readfeather / readtable instead. If pyscenic is current, reinstall it.

Compatibility

pyscenic releases before the pyarrow-compat fix; pyarrow 8+ where FeatherReader is gone.

Root cause

FeatherReader was an internal class in pyarrow.feather that pyarrow removed during API cleanup. pyscenic imported it directly, so the removal broke pyscenic at import time.

Edge cases

Pinning old pyarrow can break pandas parquet IO that wants new pyarrow; upgrading pyscenic is the cleaner path. Check the pyscenic changelog for the minimum version supporting your pyarrow.

GitHub issue aertslab/pyscenic#164 reports ImportError: cannot import name 'FeatherReader' from 'pyarrow.feather' with a modern pyarrow installed. The verified resolution: FeatherReader was removed from pyarrow.feather, so old pyscenic broke at import; the fix is upgrading pyscenic to a release compatible with modern pyarrow (or pinning an older pyarrow as a workaround). Full thread: https://github.com/aertslab/pyscenic/issues/164

Not specified by the original author.

TL;DR: pyarrow's bundled native library will not load on your Windows box. Reinstall pyarrow from a fresh wheel and make sure the Visual C++ redistributable is installed.

The error

ImportError: DLL load failed while importing lib

Fix it

1. Reinstall pyarrow cleanly:

   pip install --force-reinstall pyarrow

   Expected: downloads and installs a fresh wheel.

2. Make sure the Visual C++ redistributable (2015 or later) is installed on the machine; pyarrow's DLLs need it. Expected: installer completes.

3. Verify:

   python -c "import pyarrow; print(pyarrow.__version__)"

   Expected: prints the version, no DLL error.

When this applies

Use this when import pyarrow on Windows raises the DLL load failed message.

When it does not apply

On Linux or macOS this specific message does not occur; look for the platform's own shared-library error. If a different DLL name is missing, install that component instead.

Compatibility

Windows, pyarrow wheels with bundled native libs.

Root cause

pyarrow ships compiled C++ libraries inside the wheel. If the wheel download was corrupt, partially overwritten, or the system C++ runtime is missing, Windows cannot load the bundled lib and Python surfaces this terse error.

Edge cases

Antivirus quarantining the DLL mid-install causes repeat failures; reinstall with it paused if needed. Mixing pip and conda pyarrow in one env is a classic way to get mismatched native libs; pick one installer.

GitHub issue yuzhouren86/vxkex-next#389 reports ImportError: DLL load failed while importing lib when importing pyarrow on Windows. The verified resolution path: the bundled native library failed to load because of a corrupt or mismatched wheel and missing system runtime pieces, and the fix that worked was a clean reinstall of pyarrow from a fresh wheel (with the Visual C++ redistributable present), after which import pyarrow succeeded. Full thread: https://github.com/yuzhouren86/vxkex-next/issues/389