Don't document classes defined in if __name__ == '__main__' blocks

docs/sphinxext/apigen.py

@@ -46,6 +46,14 b' class FuncClsScanner(ast.NodeVisitor):'
         return any(isinstance(d, ast.Name) and d.id == 'undoc' \
                                 for d in node.decorator_list)
     
+    def visit_If(self, node):
+        if isinstance(node.test, ast.Compare) \
+                and isinstance(node.test.left, ast.Name) \
+                and node.test.left.id == '__name__':
+            return   # Ignore classes defined in "if __name__ == '__main__':"
+
+        self.generic_visit(node)
+    
     def visit_FunctionDef(self, node):
         if not (node.name.startswith('_') or self.has_undoc_decorator(node)) \
                 and node.name not in self.functions: