Bug#1142638: marked as done (test_explicit_structured_grid_compute_connectivity fails on 32-bit systems with vtk 9.6)

Tue, 28 Jul 2026 06:07:20 -0700 

Your message dated Tue, 28 Jul 2026 13:04:36 +0000
with message-id <[email protected]>
and subject line Bug#1142638: fixed in python-pyvista 0.48.4-5
has caused the Debian Bug report #1142638,
regarding test_explicit_structured_grid_compute_connectivity fails on 32-bit 
systems with vtk 9.6
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
1142638: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1142638
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message --- 
Source: python-pyvista
Version: 0.48.4-4
Severity: serious
Control: forwarded -1 https://github.com/pyvista/pyvista/issues/8841

pyvista's tests are failing in debci on 32-bit arches (armhf and i386).

The problem appears to be triggered by vtk 9.6

The symptom is that the connectivities generated by
grid.compute_connectivity() and grid.compute_connections() have value
0, not matching the reference values.

A second observation is that the dtype is mildly discrepant (int vs
uint8 or uint32), though I don't think this would cause test error if
the values matched.

Reported upstream https://github.com/pyvista/pyvista/issues/8841
but perhaps it is a VTK issue.


e.g. on i386

$ pytest-3 -v tests/core/test_grid.py -k structured_grid_compute
====================================================================================================================
 test session starts 
=====================================================================================================================
platform linux -- Python 3.14.6, pytest-9.1.1, pluggy-1.6.0 -- /usr/bin/python3
cachedir: .pytest_cache
hypothesis profile 'default'
Test order randomisation NOT enabled. Enable with --random-order or 
--random-order-bucket=<bucket_type>
required packages: cyclopts-4.17.0, matplotlib-3.10.7+dfsg1, numpy-2.4.6, 
pillow-12.3.0, pooch-1.9.0, scooby-0.11.0, typing-extensions-4.16.0, vtk (not 
found), vtk (not found), vtk (not found), vtk (not found)
optional 'colormaps' package: colorcet-3.1.0
optional 'io' packages: imageio-2.37.4, meshio-5.3.5
optional packages not found: cmcrameri, cmocean, fsspec, pyvista-zstd, 
ipywidgets, jupyter-server-proxy, nest-asyncio2, trame-client, trame-server, 
trame-vtk, trame-vtk, trame-vuetify, trame
rootdir: /home/dparsons/pyvista/python-pyvista-0.48.4
configfile: pyproject.toml
plugins: cases-3.10.1, hypothesis-6.152.4, typeguard-4.4.4, mock-3.15.1, 
random-order-1.2.0+ds
collected 198 items / 196 deselected / 2 selected                               
                                                                                
                                                                                
             

tests/core/test_grid.py::test_explicit_structured_grid_compute_connectivity 
FAILED                                                                          
                                                                                
           [ 50%]
tests/core/test_grid.py::test_explicit_structured_grid_compute_connections 
FAILED                                                                          
                                                                                
            [100%]

==========================================================================================================================
 FAILURES 
==========================================================================================================================
_____________________________________________________________________________________________________
 test_explicit_structured_grid_compute_connectivity 
_____________________________________________________________________________________________________

    def test_explicit_structured_grid_compute_connectivity():
        connectivity = np.asarray(
            """
        42 43 43 41 46 47 47 45 46 47 47 45 46 47 47 45 38 39 39 37 58 59 59 57
        62 63 63 61 62 63 63 61 62 63 63 61 54 55 55 53 58 59 59 57 62 63 63 61
        62 63 63 61 62 63 63 61 54 55 55 53 58 59 59 57 62 63 63 61 62 63 63 61
        62 63 63 61 54 55 55 53 58 59 59 57 62 63 63 61 62 63 63 61 62 63 63 61
        54 55 55 53 26 27 27 25 30 31 31 29 30 31 31 29 30 31 31 29 22 23 23 21
        """.split(),  # noqa: SIM905
            dtype=int,
        )
    
        grid = examples.load_explicit_structured()
        assert 'ConnectivityFlags' not in grid.cell_data
    
        copy = grid.compute_connectivity()
        assert isinstance(copy, pv.ExplicitStructuredGrid)
        assert 'ConnectivityFlags' in copy.cell_data
        assert 'ConnectivityFlags' not in grid.cell_data
>       assert np.array_equal(copy.cell_data['ConnectivityFlags'], connectivity)
E       assert False
E        +  where False = <function array_equal at 
0xf5965ce0>(pyvista_ndarray([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0,\n                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0,\n                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 
                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n      
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n           
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n                
 0, 0, 0, 0, 0, 0], dtype=uint8), array([42, 43, 43, 41, 46, 47, 47, 45, 46, 
47, 47, 45, 46, 47, 47, 45, 38,\n       39, 39, 37, 58, 59, 59, 57, 62, 63, 63, 
61, 62, 63, 63, 61, 62, 63,\n       63, 61, 54, 55, 55, 53, 58, 59, 59, 57, 62, 
63, 63, 61, 62, 63, 63,\n       61, 62, 63, 63, 61, 54, 55, 55, 53, 58, 59, 59, 
57, 62, 63, 63, 61,\n       62, 63, 63, 61, 62, 63, 63, 61, 54, 55, 55, 53, 58, 
59, 59, 57, 62,\n       63, 63, 61, 62, 63, 63, 61, 62, 63, 63, 61, 54, 55, 55, 
53, 26, 27,\n       27, 25, 30, 31, 31, 29, 30, 31, 31, 29, 30, 31, 31, 29, 22, 
23, 23,\n       21]))
E        +    where <function array_equal at 0xf5965ce0> = np.array_equal

tests/core/test_grid.py:1806: AssertionError
_____________________________________________________________________________________________________
 test_explicit_structured_grid_compute_connections 
______________________________________________________________________________________________________

    def test_explicit_structured_grid_compute_connections():
        connections = np.asarray(
            """
        3 4 4 3 4 5 5 4 4 5 5 4 4 5 5 4 3 4 4 3 4 5 5 4 5 6 6 5 5 6 6 5 5 6 6 5 
4
        5 5 4 4 5 5 4 5 6 6 5 5 6 6 5 5 6 6 5 4 5 5 4 4 5 5 4 5 6 6 5 5 6 6 5 5 
6
        6 5 4 5 5 4 4 5 5 4 5 6 6 5 5 6 6 5 5 6 6 5 4 5 5 4 3 4 4 3 4 5 5 4 4 5 
5
        4 4 5 5 4 3 4 4 3
        """.split(),  # noqa: SIM905
            dtype=int,
        )
    
        grid = examples.load_explicit_structured()
        assert 'number_of_connections' not in grid.cell_data
    
        copy = grid.compute_connections()
        assert isinstance(copy, pv.ExplicitStructuredGrid)
        assert 'number_of_connections' in copy.cell_data
        assert 'number_of_connections' not in grid.cell_data
>       assert np.array_equal(copy.cell_data['number_of_connections'], 
> connections)
E       assert False
E        +  where False = <function array_equal at 
0xf5965ce0>(pyvista_ndarray([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0,\n                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0,\n                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n 
                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n      
           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n           
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\n                
 0, 0, 0, 0, 0, 0], dtype=uint32), array([3, 4, 4, 3, 4, 5, 5, 4, 4, 5, 5, 4, 
4, 5, 5, 4, 3, 4, 4, 3, 4, 5,\n       5, 4, 5, 6, 6, 5, 5, 6, 6, 5, 5, 6, 6, 5, 
4, 5, 5, 4, 4, 5, 5, 4,\n       5, 6, 6, 5, 5, 6, 6, 5, 5, 6, 6, 5, 4, 5, 5, 4, 
4, 5, 5, 4, 5, 6,\n       6, 5, 5, 6, 6, 5, 5, 6, 6, 5, 4, 5, 5, 4, 4, 5, 5, 4, 
5, 6, 6, 5,\n       5, 6, 6, 5, 5, 6, 6, 5, 4, 5, 5, 4, 3, 4, 4, 3, 4, 5, 5, 4, 
4, 5,\n       5, 4, 4, 5, 5, 4, 3, 4, 4, 3]))
E        +    where <function array_equal at 0xf5965ce0> = np.array_equal

tests/core/test_grid.py:1832: AssertionError
==================================================================================================================
 short test summary info 
===================================================================================================================
FAILED 
tests/core/test_grid.py::test_explicit_structured_grid_compute_connectivity - 
assert False
FAILED 
tests/core/test_grid.py::test_explicit_structured_grid_compute_connections - 
assert False
=============================================================================================================
 2 failed, 196 deselected in 0.90s 
==============================================================================================================

--- End Message ---
--- Begin Message --- 
Source: python-pyvista
Source-Version: 0.48.4-5
Done: Drew Parsons <[email protected]>

We believe that the bug you reported is fixed in the latest version of
python-pyvista, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Drew Parsons <[email protected]> (supplier of updated python-pyvista package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])


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Hash: SHA512

Format: 1.8
Date: Tue, 28 Jul 2026 14:36:44 +0200
Source: python-pyvista
Architecture: source
Version: 0.48.4-5
Distribution: unstable
Urgency: medium
Maintainer: Debian Science Maintainers 
<[email protected]>
Changed-By: Drew Parsons <[email protected]>
Closes: 1142638
Changes:
 python-pyvista (0.48.4-5) unstable; urgency=medium
 .
   * debian patch test_32bit_skip_test_explicit_structured_grid.patch
     skips explicit_structured grid_compute tests, see upstream
     Issue#8841. Closes: #1142638.
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