[issue8733] list type and UserList do not call super in __init__ and therefore, they cannot be parents in a multiple inheritence scheme

[Yury Selivanov]

Changes by Yury Selivanov <yselivanov.ml at gmail.com>:


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versions: +Python 3.5 -Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8733>
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