The first batch of changes recommended by the fixdiv tool.  These are
mostly changes of / operators into //.  Once or twice I did more or
less than recommended.
diff --git a/Lib/quopri.py b/Lib/quopri.py
index 575fcd1..f668abf 100755
--- a/Lib/quopri.py
+++ b/Lib/quopri.py
@@ -27,7 +27,7 @@
 def quote(c):
     """Quote a single character."""
     i = ord(c)
-    return ESCAPE + HEX[i/16] + HEX[i%16]
+    return ESCAPE + HEX[i//16] + HEX[i%16]