diff -r de982d8b7b15 Lib/urllib/robotparser.py
--- a/Lib/urllib/robotparser.py	Tue Oct 13 21:26:35 2015 +0300
+++ b/Lib/urllib/robotparser.py	Tue Oct 13 17:41:20 2015 -0700
@@ -178,13 +178,19 @@
         for entry in self.entries:
             if entry.applies_to(useragent):
                 return entry.delay
-        return None
+        # Check to see if robots.txt has been read, if not, return None
+        if not self.last_checked:
+            return None
+        return self.default_entry.delay
 
     def request_rate(self, useragent):
         for entry in self.entries:
             if entry.applies_to(useragent):
                 return entry.req_rate
-        return None
+        # Check to see if robots.txt has been read, if not, return None
+        if not self.last_checked:
+            return None
+        return self.default_entry.req_rate
 
     def __str__(self):
         return ''.join([str(entry) + "\n" for entry in self.entries])