micropython: add micropython component

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

@@ -0,0 +1,26 @@
+# test class with __getitem__, __setitem__, __delitem__ methods
+
+class C:
+    def __getitem__(self, item):
+        print('get', item)
+        return 'item'
+
+    def __setitem__(self, item, value):
+        print('set', item, value)
+
+    def __delitem__(self, item):
+        print('del', item)
+
+c = C()
+print(c[1])
+c[1] = 2
+del c[3]
+
+# index not supported
+class A:
+    pass
+a = A()
+try:
+    a[1]
+except TypeError:
+    print('TypeError')