$pytestlib/matplotlib/tests/test_backend_qt.py::test_ipython

________ test_ipython ________    def test_ipython():        from matplotlib.testing import ipython_in_subprocess>       ipython_in_subprocess("qt", "QtAgg", "qtagg")lib/matplotlib/tests/test_backend_qt.py:381: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ requested_backend_or_gui_framework = 'qt', expected_backend_old_ipython = 'QtAgg', expected_backend_new_ipython = 'qtagg'    def ipython_in_subprocess(        requested_backend_or_gui_framework,        expected_backend_old_ipython,  # IPython < 8.24        expected_backend_new_ipython,  # IPython >= 8.24    ):        import pytest        IPython = pytest.importorskip("IPython")            if sys.platform == "win32":            pytest.skip("Cannot change backend running IPython in subprocess on Windows")            if (IPython.version_info[:3] == (8, 24, 0) and                requested_backend_or_gui_framework == "osx"):            pytest.skip("Bug using macosx backend in IPython 8.24.0 fixed in 8.24.1")            if IPython.version_info[:2] >= (8, 24):            expected_backend = expected_backend_new_ipython        else:            # This code can be removed when Python 3.12, the latest version supported by            # IPython < 8.24, reaches end-of-life in late 2028.            expected_backend = expected_backend_old_ipython            code = ("import matplotlib as mpl, matplotlib.pyplot as plt;"                "fig, ax=plt.subplots(); ax.plot([1, 3, 2]); mpl.get_backend()")        proc = subprocess_run_for_testing(            [                "ipython",                "--no-simple-prompt",                f"--matplotlib={requested_backend_or_gui_framework}",                "-c", code,            ],            check=True,            capture_output=True,        )    >       assert proc.stdout.strip() == f"Out[1]: '{expected_backend}'"E       AssertionErrorlib/matplotlib/testing/__init__.py:217: AssertionError