micropython: add micropython component

components/language/micropython/tests/basics/subclass_native3.py

@@ -0,0 +1,62 @@
+# test subclassing a native exception
+
+
+class MyExc(Exception):
+    pass
+
+
+e = MyExc(100, "Some error")
+print(e)
+print(repr(e))
+print(e.args)
+
+try:
+    raise MyExc("Some error", 1)
+except MyExc as e:
+    print("Caught exception:", repr(e))
+
+try:
+    raise MyExc("Some error2", 2)
+except Exception as e:
+    print("Caught exception:", repr(e))
+
+try:
+    raise MyExc("Some error2")
+except:
+    print("Caught user exception")
+
+
+class MyStopIteration(StopIteration):
+    pass
+
+
+print(MyStopIteration().value)
+print(MyStopIteration(1).value)
+
+
+class Iter:
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        # This exception will stop the "yield from", with a value of 3
+        raise MyStopIteration(3)
+
+
+def gen():
+    print((yield from Iter()))
+    return 4
+
+
+try:
+    next(gen())
+except StopIteration as er:
+    print(er.args)
+
+
+class MyOSError(OSError):
+    pass
+
+
+print(MyOSError().errno)
+print(MyOSError(1, "msg").errno)