Fix #148: serialize LMF metadata properly

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+* `wn.lmf` now serialized DC and non-DC metadata correctly ([#148])
+
 
 ## [v0.8.2]
 
@@ -462,3 +466,4 @@ abandoned, but this is an entirely new codebase.
 [#123]: https://github.com/goodmami/wn/issues/123
 [#124]: https://github.com/goodmami/wn/issues/124
 [#125]: https://github.com/goodmami/wn/issues/125
+[#148]: https://github.com/goodmami/wn/issues/148

tests/data/mini-lmf-1.0.xml

@@ -26,7 +26,8 @@ Spanish:
            email="[email protected]"
            license="https://creativecommons.org/licenses/by/4.0/"
            version="1"
-           url="https://example.com/test-en">
+           url="https://example.com/test-en"
+           dc:description="An example lexicon for testing.">
 
     <LexicalEntry id="test-en-information-n">
       <Lemma partOfSpeech="n" writtenForm="information" script="Latn">
@@ -37,7 +38,7 @@ Spanish:
       </Sense>
     </LexicalEntry>
 
-    <LexicalEntry id="test-en-example-n">
+    <LexicalEntry id="test-en-example-n" confidenceScore="1.0">
       <Lemma partOfSpeech="n" writtenForm="example" />
       <Sense id="test-en-example-n-0002-01" synset="test-en-0002-n" >
         <SenseRelation relType="derivation" target="test-en-exemplify-v-0003-01" />

wn/lmf.py

@@ -1314,9 +1314,15 @@ def _indent(elem: ET.Element, level: int) -> None:
 
 def _meta_dict(m: Optional[Metadata]) -> Dict[str, str]:
     if m:
-        d = {f'dc:{key}': str(val)
-             for key, val in zip(m._fields, m)
-             if val is not None}
+        d = {f'dc:{key}': str(getattr(m, key))
+             for key in _DC_ATTRS
+             if getattr(m, key, None) is not None}
+        if m.status is not None:
+            d['status'] = m.status
+        if m.note is not None:
+            d['note'] = m.note
+        if m.confidence is not None:
+            d['confidenceScore'] = str(m.confidence)
     else:
         d = {}
     return d