<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">When definnning classes in a method that are subcallses, like:</p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">def d():</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"> class A(BaseType): pass</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">
…</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">The new generated types is appended to the _subtypes weak reference list on BaseType.</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">
Looks like this list is only cleaned when <span style="font-size:10.0pt;font-family:"Courier New"">RemoveSubType</span> Is called, which might never happen if I understand correctly.</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">
</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Seems to me there should be a cleanup mechanism similar to WeakDictionary, so the list can't grow to infinity.</p><p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">
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