diff --git a/io/io.py b/io/io.py
index 6cf1cec1..adc29544 100644
--- a/io/io.py
+++ b/io/io.py
@@ -1 +1,5 @@
 from uio import *
+
+SEEK_SET = 0
+SEEK_CUR = 1
+SEEK_END = 2