py: Implement support for "except Exception as var" clause.

For this, needed to implement DELETE_NAME bytecode (because var bound
in except clause is automatically deleted at its end).
http://docs.python.org/3/reference/compound_stmts.html#except :
"When an exception has been assigned using as target, it is cleared at
the end of the except clause."

1 files changed, 1 insertions, 0 deletions

diff --git a/py/runtime.h b/py/runtime.h
index 7215cc889..3980e50cc 100644
--- a/py/runtime.h
+++ b/py/runtime.h
@@ -12,6 +12,7 @@ mp_obj_t rt_get_cell(mp_obj_t cell);
 void rt_set_cell(mp_obj_t cell, mp_obj_t val);
 void rt_store_name(qstr qstr, mp_obj_t obj);
 void rt_store_global(qstr qstr, mp_obj_t obj);
+void rt_delete_name(qstr qstr);
 mp_obj_t rt_unary_op(int op, mp_obj_t arg);
 mp_obj_t rt_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs);
 mp_obj_t rt_make_function_from_id(int unique_code_id, mp_obj_t def_args);