Commit 5985f242 authored by Committed by Julien Muchembled
Fix most Deprecation and Resource warnings.
On Python 3, these made the build output very hard to read (e.g., https://travis-ci.org/buildout/buildout/jobs/394026829) On Python 3.7, these could actually break the doctests. Closing the files should get us closer to being able to pass the tests with PyPy.
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