fix: reference to global inside get_target_namespace_elements (#2311)

`get_target_namespace_elements` references the `args` global, which is not
defined if the function is called from outside the module. This commit fixes
that instead referencing the argument passed to the function.

- Closes <#2072>.

rdflib/tools/defined_namespace_creator.py

@@ -106,7 +106,7 @@ def get_target_namespace_elements(
     for e in elements:
         desc = e[1].replace("\n", " ")
         elements_strs.append(
-            f"    {e[0].replace(args.target_namespace, '')}: URIRef  # {desc}\n"
+            f"    {e[0].replace(target_namespace, '')}: URIRef  # {desc}\n"
         )
 
     return elements, elements_strs

test/test_namespace/test_definednamespace_creator.py

@@ -2,6 +2,9 @@
 import sys
 from pathlib import Path
 
+from rdflib.graph import Graph
+from rdflib.tools.defined_namespace_creator import get_target_namespace_elements
+
 
 def test_definednamespace_creator_qb():
     """
@@ -163,3 +166,15 @@ def test_definednamespace_creator_multiple_comments():
 
     # cleanup
     Path.unlink(Path("_MULTILINESTRINGEXAMPLE.py"))
+
+
+def test_get_target_namespace_elements(rdfs_graph: Graph) -> None:
+    elements = get_target_namespace_elements(
+        rdfs_graph, "http://www.w3.org/2000/01/rdf-schema#"
+    )
+    assert 2 == len(elements)
+    assert 16 == len(elements[0])
+    assert (
+        "http://www.w3.org/2000/01/rdf-schema#Class",
+        "The class of classes.",
+    ) in elements[0]