#25657: gevent-monkeypatching with GIS PointField causes intermittent traceback 
on
shutdown
--------------------------+--------------------------------------
     Reporter:  jaddison  |                    Owner:  nobody
         Type:  Bug       |                   Status:  new
    Component:  GIS       |                  Version:  1.9b1
     Severity:  Normal    |               Resolution:
     Keywords:  gevent    |             Triage Stage:  Unreviewed
    Has patch:  0         |      Needs documentation:  0
  Needs tests:  0         |  Patch needs improvement:  0
Easy pickings:  0         |                    UI/UX:  0
--------------------------+--------------------------------------
Changes (by claudep):

 * needs_better_patch:   => 0
 * needs_tests:   => 0
 * needs_docs:   => 0


Comment:

 All of this is related to garbage collection, that's clear. `WKBWriter`/
 `WKBReader` instances have a `__del__` method, so they are not part of the
 normal Python garbage collection cycle (read
 
https://docs.python.org/3/reference/datamodel.html?highlight=__del__#object.__del__).

 Looking at the traceback though, it seems that the error is happening in
 `gevent` itself, that's why I doubt we'll able to fix this on Django's
 side. Also note that these errors are more annoying than harmful.

 #20903 also reported this (but without reproducible code).

--
Ticket URL: <https://code.djangoproject.com/ticket/25657#comment:1>
Django <https://code.djangoproject.com/>
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