micropython: add micropython component

components/language/micropython/tests/basics/slice_attrs.py

@@ -0,0 +1,24 @@
+# test builtin slice attributes access
+
+# print slice attributes
+class A:
+    def __getitem__(self, idx):
+        print(idx.start, idx.stop, idx.step)
+
+try:
+    t = A()[1:2]
+except:
+    print("SKIP")
+    raise SystemExit
+
+
+A()[1:2:3]
+
+# test storing to attr (shouldn't be allowed)
+class B:
+    def __getitem__(self, idx):
+        try:
+            idx.start = 0
+        except AttributeError:
+            print('AttributeError')
+B()[:]