--- a/src/ast_convert.rs
+++ b/src/ast_convert.rs
@@ -307,6 +307,7 @@ fn parse_expr(py: Python, ast: PyObject)
     let set_type = ast_module.get(py, "Set").unwrap();
     let setcomp_type = ast_module.get(py, "SetComp").unwrap();
     let generatorexp_type = ast_module.get(py, "GeneratorExp").unwrap();
+    let lambda_type = ast_module.get(py, "Lambda").unwrap();
 
     assert!(is_instance(&ast, &ast_type));
 
@@ -444,6 +445,14 @@ fn parse_expr(py: Python, ast: PyObject)
         let generators = parse_list(py, generators, parse_comprehension);
 
         expr::GeneratorExp(Box::new(elt), generators)
+    } else if is_instance(&ast, &lambda_type) {
+        let args = ast.getattr(py, "args").unwrap();
+        let body = ast.getattr(py, "body").unwrap();
+
+        let args = parse_arguments(py, args);
+        let body = parse_expr(py, body);
+
+        expr::Lambda(Box::new(args), Box::new(body))
     } else {
         println!("expr {}", ast);
         unreachable!()