This is relevant when using runpytest in-process.
Fixes:
E def test_1(testdir):
E testdir.runpytest()
E > __import__('pdb').set_trace()
E
E ../../test_trace_after_runpytest.py:3:
E …/Vcs/pytest/src/_pytest/debugging.py:81: in set_trace
E tw = _pytest.config.create_terminal_writer(cls._config)
E
E config = None, args = (), kwargs = {}, tw = <py._io.terminalwriter.TerminalWriter object at 0x7f1097088160>
E
E def create_terminal_writer(config, *args, **kwargs):
E """Create a TerminalWriter instance configured according to the options
E in the config object. Every code which requires a TerminalWriter object
E and has access to a config object should use this function.
E """
E tw = py.io.TerminalWriter(*args, **kwargs)
E > if config.option.color == "yes":
E E AttributeError: 'NoneType' object has no attribute 'option'
Daniel Hahler