Move ExitCode's definition from _pytest.main to _pytest.config #6711
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ExitCode is used in several internal modules and hooks and so with type annotations added, needs to be imported a lot. _pytest.main, being the entry point, generally sits at the top of the import tree. So, it's not great to have ExitCode defined in _pytest.main, because it will cause a lot of import cycles once type annotations are added (in fact there is already one, which this change removes). Move it to _pytest.config instead. _pytest.main still imports ExitCode, so importing from there still works, although external users should really be importing from `pytest`.
blueyed
approved these changes
Feb 10, 2020
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ExitCode is used in several internal modules and hooks and so with type
annotations added, needs to be imported a lot.
_pytest.main, being the entry point, generally sits at the top of the
import tree.
So, it's not great to have ExitCode defined in _pytest.main, because it
will cause a lot of import cycles once type annotations are added (in
fact there is already one, which this change removes).
Move it to _pytest.config instead.
_pytest.main still imports ExitCode, so importing from there still
works, although external users should really be importing from
pytest.