[issue39495] xml.etree.ElementTree.TreeBuilder.start differs between pure Python and C implementations

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

According to the documentation the attrs parameter does not have default value. I think that the C implementation should be changed.

https://docs.python.org/3/library/xml.etree.elementtree.html#xml.etree.ElementTree.TreeBuilder.start

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