fix: remove unused hist import in test_0965

[GaetanLepage]

Test 0965 fails:

==================================== ERRORS ====================================_____ ERROR collecting tests/test_0965-inverted-axes-variances-hist-888.py _____ImportError while importing test module '/build/source/tests/test_0965-inverted-axes-variances-hist-888.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/nix/store/pzf6dnxg8gf04xazzjdwarm7s03cbrgz-python3-3.10.12/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
tests/test_0965-inverted-axes-variances-hist-888.py:5: in <module>
    import hist
E   ModuleNotFoundError: No module named 'hist'

It seems that the other tests relying on hist import it using hist = pytest.importorskip("hist").
I did the same in this problematic test.

[ioanaif]

hist is not used in these tests, thus it can be simply removed as an import

[jpivarski]

Suggested change

	hist = pytest.importorskip("hist")
	pytest.importorskip("hist")

[jpivarski]

Wait—we do need this import because to_hist is used in the tests. These would fail if hist is not installed. We do need the importorskip, but we don't need to assign it to a variable.

[jpivarski]

Thanks for catching this!

I'll merge it when the tests pass.

[jpivarski]

Suggested change

	hist = pytest.importorskip("hist")
	pytest.importorskip("hist")

[GaetanLepage]

I removed the import completely.

[jpivarski]

Okay, now it's in a good state. The lines where there's a hidden dependency on hist (Uproot would raise ModuleNotFoundError suggesting that you install it) are

uproot5/tests/test_0965-inverted-axes-variances-hist-888.py

Line 25 in e4b4b80

hhist2 = huproot2.to_hist()

and

uproot5/tests/test_0965-inverted-axes-variances-hist-888.py

Line 46 in e4b4b80

hhist3 = huproot3.to_hist()

Now that the file has

uproot5/tests/test_0965-inverted-axes-variances-hist-888.py

Line 8 in e4b4b80

pytest.importorskip("hist")

I'll enable "auto-merge (squash)."

[jpivarski]

@all-contributors please add @GaetanLepage for test

Thanks!

[allcontributors]

@jpivarski

I've put up a pull request to add @GaetanLepage! 🎉