A silly caesar cipher thing

local/bin/caesar

@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+from __future__ import print_function
+
+import sys
+
+
+def main(sysargs=sys.argv[:]):
+    d = {}
+    for c in (65, 97):
+        for i in range(26):
+            d[chr(i+c)] = chr((i+13) % 26 + c)
+
+    print(
+        "".join([
+            d.get(c, c) for c in " ".join(sysargs[1:])
+        ]),
+        end=""
+    )
+    
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())