diff --git a/pcl_expect/.cvsignore b/pcl_expect/.cvsignore
new file mode 100644
index 0000000000000000000000000000000000000000..52e4e61140d1226f5ba80676d1973baa298d3b23
--- /dev/null
+++ b/pcl_expect/.cvsignore
@@ -0,0 +1,2 @@
+*.pyc
+*.pyo