#14638: pydoc now treats non-str __name__ as None instead of raising

Original patch by Peter Otten.

2 files changed, 13 insertions, 1 deletions

diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 89fd09b..37616fb 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -1525,7 +1525,8 @@ def resolve(thing, forceload=0):
             raise ImportError('no Python documentation found for %r' % thing)
         return object, thing
     else:
-        return thing, getattr(thing, '__name__', None)
+        name = getattr(thing, '__name__', None)
+        return thing, name if isinstance(name, str) else None
 
 def render_doc(thing, title='Python Library Documentation: %s', forceload=0,
         renderer=None):
diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py
index 65b0ab5..c5a8e98 100644
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -282,6 +282,17 @@ class PydocDocTest(unittest.TestCase):
         result, doc_loc = get_pydoc_text(xml.etree)
         self.assertEqual(doc_loc, "", "MODULE DOCS incorrectly includes a link")
 
+    def test_non_str_name(self):
+        # issue14638
+        # Treat illegal (non-str) name like no name
+        class A:
+            __name__ = 42
+        class B:
+            pass
+        adoc = pydoc.render_doc(A())
+        bdoc = pydoc.render_doc(B())
+        self.assertEqual(adoc.replace("A", "B"), bdoc)
+
     def test_not_here(self):
         missing_module = "test.i_am_not_here"
         result = str(run_pydoc(missing_module), 'ascii')