diff options
Diffstat (limited to 'Lib/xml')
| -rw-r--r-- | Lib/xml/etree/ElementTree.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py index da2bcad..7a26900 100644 --- a/Lib/xml/etree/ElementTree.py +++ b/Lib/xml/etree/ElementTree.py @@ -1876,6 +1876,11 @@ class C14NWriterTarget: self._declared_ns_stack[-1].append((uri, prefix)) return f'{prefix}:{tag}' if prefix else tag, tag, uri + if not uri: + # As soon as a default namespace is defined, + # anything that has no namespace (and thus, no prefix) goes there. + return tag, tag, uri + raise ValueError(f'Namespace "{uri}" is not declared in scope') def data(self, data): |