micropython: add micropython component

components/language/micropython/tests/cpydiff/builtin_next_arg2.py

@@ -0,0 +1,12 @@
+"""
+categories: Modules,builtins
+description: Second argument to next() is not implemented
+cause: MicroPython is optimised for code space.
+workaround: Instead of ``val = next(it, deflt)`` use::
+
+    try:
+        val = next(it)
+    except StopIteration:
+        val = deflt
+"""
+print(next(iter(range(0)), 42))