[issue29564] ResourceWarning: suggest to enable tracemalloc in the message

[STINNER Victor]

Change by STINNER Victor <vstinner at redhat.com>:


----------
keywords: +patch
pull_requests: +9748
stage: test needed -> patch review

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue29564>
_______________________________________