import importlib import platform import pyo3_pytests.misc import pytest def test_issue_219(): # Should not deadlock pyo3_pytests.misc.issue_219() @pytest.mark.skipif( platform.python_implementation() == "PyPy", reason="PyPy does not reinitialize the module (appears to be some internal caching)", ) def test_second_module_import_fails(): spec = importlib.util.find_spec("pyo3_pytests.pyo3_pytests") with pytest.raises( ImportError, match="PyO3 modules may only be initialized once per interpreter process", ): importlib.util.module_from_spec(spec)