Restore ability to provide a tree builder name as string (#559)

theRealProHacker · ambv · web-flow · commit c64a1115daa4 · 2023-03-01T21:02:42.000+01:00
Co-authored-by: Łukasz Langa &lt;lukasz@langa.pl&gt;
diff --git a/html5lib/html5parser.py b/html5lib/html5parser.py
@@ -115,6 +115,9 @@ def __init__(self, tree=None, strict=False, namespaceHTMLElements=True, debug=Fa
 
         if tree is None:
             tree = treebuilders.getTreeBuilder("etree")
+        elif isinstance(tree, str):
+            tree = treebuilders.getTreeBuilder(tree)
+
         self.tree = tree(namespaceHTMLElements)
         self.errors = []
 
