Shantanu <hauntsani...@gmail.com> added the comment:
Based on https://github.com/python/cpython/blob/master/Modules/_elementtree.c#L2700 and the behaviour at runtime, something like the following patch could work: ``` diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py index c8d898f328..bbfc1afe08 100644 --- a/Lib/xml/etree/ElementTree.py +++ b/Lib/xml/etree/ElementTree.py @@ -1452,7 +1452,7 @@ class TreeBuilder: """Add text to current element.""" self._data.append(data) - def start(self, tag, attrs): + def start(self, tag, attrs=None): """Open new element and return it. *tag* is the element name, *attrs* is a dict containing element @@ -1460,6 +1460,8 @@ class TreeBuilder: """ self._flush() + if attrs is None: + attrs = {} self._last = elem = self._factory(tag, attrs) if self._elem: self._elem[-1].append(elem) ``` Happy to submit a PR! ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39495> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
