#10549: fix interface of docclass() for text documenter.

Lib/pydoc.py

@@ -1132,7 +1132,7 @@ doubt, consult the module reference at the location listed above.
         result = result + self.section('FILE', file)
         return result
 
-    def docclass(self, object, name=None, mod=None):
+    def docclass(self, object, name=None, mod=None, *ignored):
         """Produce text documentation for a given class object."""
         realname = object.__name__
         name = name or realname

Misc/NEWS

@@ -33,6 +33,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #10549: Fix pydoc traceback when text-documenting certain classes.
+
 - Issue #2001: New HTML server with enhanced Web page features.  Patch by Ron
   Adam.