How can I catch Exception which would raise in conftest.py

[megachweng]

I've developed a Pytest plugin, which is used to make a http request to report the status of the tests to an external system during execution.

However, as I have no control over my colleagues' code, they might make some errors in conftest.py, which could crash before this plugin is even loaded. Therefore, the external system is unable to receive the test status and stuck there.

@pytest.hookimpl(hookwrapper=True, trylast=True)
def pytest_sessionfinish(session, exitstatus):
    yield
    make_test_end_report_request(xxxxx)

@pytest.hookimpl(tryfirst=True)
def pytest_sessionstart(session):
   make_test_start_report_request(xxxxx)
    

In this situation, how can I ensure that I can catch all exceptions and send error occured report to the external system?

I also tries using subprocess

popen = subprocess.Popen(
        ['pytest'] + params or [],
        stdout=subprocess.PIPE,
        stderr=subprocess.STDOUT,
        universal_newlines=True,
        shell=True
    )

return_code = popen.wait()
if return_code > 0:
    make_http_report(reason='Error occured')

but still can not 'try catch' which type of error is occured during the test.

[The-Compiler]

Have you considered calling pytest.main instead (How to invoke pytest — pytest documentation) and catching exceptions around that?