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Author methane
Recipients berker.peksag, jmadden, larry, methane, minrk, ned.deily, python-dev, serhiy.storchaka, vstinner, wenzel, xiang.zhang
Date 2016-12-17.09:26:43
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
Before Python 3.6, instance.__dict__.pop(key) didn't trigger this.
But there are many way to trigger this. This bug is live from 3.3.
This script reproduce this issue on Python 3.5.

class C: pass
a = C()
a.a = 1
while True:
    a.__dict__.popitem()  # convert split table into combined table.
    a.a = 1   # convert combined table into split table again.
Date User Action Args
2016-12-17 09:26:43methanesetrecipients: + methane, vstinner, larry, ned.deily, python-dev, berker.peksag, serhiy.storchaka, minrk, jmadden, xiang.zhang, wenzel
2016-12-17 09:26:43methanesetmessageid: <>
2016-12-17 09:26:43methanelinkissue28147 messages
2016-12-17 09:26:43methanecreate