New submission from Serhiy Storchaka <storchaka+cpyt...@gmail.com>:

Currently some methods for xml.etree.ElementTree.Element check the type 
subelements: append(), extend(), insert(). But there are other ways to add 
non-Element children: __setitem__(), __setstate__(), __deepcopy__(). This could 
cause crashes later in the C code and required to add numerous type checks for 
iterating and searching. Since the intention was to prevent adding non-Element 
children, it is better to check the type every time when add new children.

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assignee: serhiy.storchaka
components: Library (Lib), XML
messages: 327939
nosy: eli.bendersky, scoder, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Add more type checks for children of xml.etree.ElementTree.Element
type: behavior
versions: Python 3.8

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue35013>
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