Merge pull request #72 from kkszysiu/list_iter_fix

Removed assert from str to make __iter__ work again

src/runtime/objmodel.cpp

@@ -1015,8 +1015,6 @@ extern "C" BoxedString* str(Box* obj) {
             str = getclsattr_internal(obj, "__repr__", NULL, NULL);
 
         if (str == NULL) {
-            ASSERT(isUserDefined(obj->cls), "%s.__str__", getTypeName(obj)->c_str());
-
             char buf[80];
             snprintf(buf, 80, "<%s object at %p>", getTypeName(obj)->c_str(), obj);
             return boxStrConstant(buf);

test/tests/test_list_iter.py

+a = [3, 2, 1]
+b = [2, 'a', (3, 2)]
+
+# TODO: uncomment when hassattr will be implemented
+#assert hasattr(a, '__iter__')
+
+iter_a = a.__iter__()
+assert iter_a.next() == 3
+assert iter_a.next() == 2
+assert iter_a.next() == 1
+
+iter_b = b.__iter__()
+assert iter_b.next() == 2
+assert iter_b.next() == 'a'
+assert iter_b.next() == (3, 2)
+