micropython: add micropython component

components/language/micropython/tests/extmod/ure_sub_unmatched.py

@@ -0,0 +1,19 @@
+# test re.sub with unmatched groups, behaviour changed in CPython 3.5
+
+try:
+    import ure as re
+except ImportError:
+    try:
+        import re
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+try:
+    re.sub
+except AttributeError:
+    print("SKIP")
+    raise SystemExit
+
+# first group matches, second optional group doesn't so is replaced with a blank
+print(re.sub(r"(a)(b)?", r"\2-\1", "1a2"))