py: Add generic mp_not_implemented() func to use instead of assert().
Benefits: won't crash baremetal targets, will provide Python source location
when not implemented feature used (it will no longer provide C source
location, but just grep for error message).
diff --git a/py/runtime.h b/py/runtime.h
index dbd4131..fb61c01 100644
--- a/py/runtime.h
+++ b/py/runtime.h
@@ -112,6 +112,9 @@
mp_obj_t mp_import_from(mp_obj_t module, qstr name);
void mp_import_all(mp_obj_t module);
+// Raise NotImplementedError with given message
+NORETURN void mp_not_implemented(const char *msg);
+
extern struct _mp_obj_list_t mp_sys_path_obj;
extern struct _mp_obj_list_t mp_sys_argv_obj;
#define mp_sys_path ((mp_obj_t)&mp_sys_path_obj)