[Debian-med-packaging] Bug#979625: autopkgtest: ModuleNotFoundError (ipytree) and AssertionError

[Juhani Numminen]

Package: src:python-cooler
Version: 0.8.8-1
Severity: serious

Dear Maintainer,

debci reports errors for this package's tests.
There is a ModuleNotFoundError and one error with the result of
`runner.invoke(show, [f_in, 'chr1', '-o', 'bla'])`.


=================================== FAILURES ===================================
__________________________________ test_show ___________________________________

    def test_show():
        runner = CliRunner()
        with runner.isolated_filesystem():
            f_in = op.join(datadir, "toy.symm.upper.2.cool")
            result = runner.invoke(show, [f_in, 'chr1', '-o', 'bla'])
>           assert result.exit_code == 0
E           assert 1 == 0
E            +  where 1 = <Result SystemExit(1)>.exit_code

tests/test_cli_export.py:116: AssertionError
_______________________________ test_print_trees _______________________________

group = <Closed HDF5 file>, expand = False, level = None

    def tree_widget(group, expand, level):
        try:
>           import ipytree
E           ModuleNotFoundError: No module named 'ipytree'

/usr/lib/python3/dist-packages/cooler/fileops.py:299: ModuleNotFoundError

During handling of the above exception, another exception occurred:

    def test_print_trees():
        src_file = op.join(testdir, "data", "toy.symm.upper.2.mcool")
        fileops.pprint_attr_tree(src_file, level=3)
        fileops.pprint_data_tree(src_file, level=3)
    
        with h5py.File(src_file) as f:
            t = fileops.TreeViewer(f)
>           t._ipython_display_()

tests/test_fileops.py:152: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/usr/lib/python3/dist-packages/cooler/fileops.py:391: in _ipython_display_
    tree = tree_widget(self.group, expand=self.expand, level=self.level)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

group = <Closed HDF5 file>, expand = False, level = None

    def tree_widget(group, expand, level):
        try:
            import ipytree
        except ImportError as error:
>           raise ImportError(
                "{}: Run `pip install ipytree` or `conda install ipytree`"
                "to get the required ipytree dependency for displaying the tree "
                "widget. If using jupyterlab, you also need to run "
                "`jupyter labextension install ipytree`".format(error)
            )
E           ImportError: No module named 'ipytree': Run `pip install ipytree` or `conda install ipytree`to get the required ipytree dependency for displaying the tree widget. If using jupyterlab, you also need to run `jupyter labextension install ipytree`

/usr/lib/python3/dist-packages/cooler/fileops.py:301: ImportError