Function pytest_sessionstart

mypy/test/data.py:602–606

(session: Any)

def pytest_sessionstart(session: Any) -> None:
    # Clean up directory where mypyc tests write intermediate files on failure
    # to avoid any confusion between test runs
    if os.path.isdir(mypyc_output_dir):
        shutil.rmtree(mypyc_output_dir)


# This function name is special to pytest.  See