Try to remove cr.commit (and rollback) from module and db install:
* put a savepoint around test data loading
* remove a bunch of commits sprinkled throughout
* remove rollback on data loading failure (assuming it bubbles up, the
entire module's installation should be rolled back)
* add commit right before the tests are run, so they can run isolated
and still see whatever was done when installing their module
* convert a few explicit closing to context managers
In Python 3:
* various builtins and dict methods were changed to return
view/iterable objects rather than lists
* and the separate Python 2 view/iterable builtins and methods were
removed altogether
This is problematic when using these items as list (which the happens
repeatedly in Odoo), but more viciously when iterating *multiple times*
over them (which also happens, which I've messed up multiple times while
writing this, and which is a pain to debug even when you've just created
the issue).
Convert all code using these to semantics-matching cross-version
helper functions to get the LCD behaviour between P2 and P3, and
forbid the builtins via lint.
issue #8530
Xavier Morel