Implement kwargs for builtin open() and _io.FileIO

This makes open() and _io.FileIO() more CPython compliant.
The mode kwarg is fully iplemented.
The encoding kwarg is allowed but not implemented; mainly to allow
the tests to specify encoding for CPython, see #874

1 files changed, 3 insertions, 1 deletions

diff --git a/unix/modsocket.c b/unix/modsocket.c
index 7f9184db6..82d833653 100644
--- a/unix/modsocket.c
+++ b/unix/modsocket.c
@@ -257,7 +257,9 @@ STATIC mp_obj_t socket_makefile(mp_uint_t n_args, const mp_obj_t *args) {
     mp_obj_t *new_args = alloca(n_args * sizeof(mp_obj_t));
     memcpy(new_args + 1, args + 1, (n_args - 1) * sizeof(mp_obj_t));
     new_args[0] = MP_OBJ_NEW_SMALL_INT(self->fd);
-    return mp_builtin_open(n_args, new_args);
+    mp_map_t kwargs;
+    mp_map_init(&kwargs, 0);
+    return mp_builtin_open(n_args, new_args, &kwargs);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(socket_makefile_obj, 1, 3, socket_makefile);