diff --git a/csp/.gitignore b/csp/.gitignore
new file mode 100644
index 00000000..1a57f7de
--- /dev/null
+++ b/csp/.gitignore
@@ -0,0 +1,17 @@
+*.pyc
+
+# for Racket
+compiled/
+
+# for Mac OS X
+.DS_Store
+.AppleDouble
+.LSOverride
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear on external disk
+.Spotlight-V100
+.Trashes