diff -r 8f91b475c2fd Lib/rlcompleter.py
--- a/Lib/rlcompleter.py	Thu Sep 24 14:36:00 2015 +0300
+++ b/Lib/rlcompleter.py	Thu Sep 24 15:15:13 2015 +0300
@@ -106,6 +106,12 @@ class Completer:
         n = len(text)
         for word in keyword.kwlist:
             if word[:n] == text:
+                if word in {'finally', 'try'}:
+                    word = word + ":"
+                elif word not in {'False', 'None', 'True',
+                                  'break', 'continue', 'pass',
+                                  'else'}:
+                    word = word + " "
                 matches.append(word)
         for nspace in [builtins.__dict__, self.namespace]:
             for word, val in nspace.items():
diff -r 8f91b475c2fd Lib/test/test_rlcompleter.py
--- a/Lib/test/test_rlcompleter.py	Thu Sep 24 14:36:00 2015 +0300
+++ b/Lib/test/test_rlcompleter.py	Thu Sep 24 15:15:13 2015 +0300
@@ -67,10 +67,14 @@ class TestRlcompleter(unittest.TestCase)
     def test_complete(self):
         completer = rlcompleter.Completer()
         self.assertEqual(completer.complete('', 0), '\t')
-        self.assertEqual(completer.complete('a', 0), 'and')
-        self.assertEqual(completer.complete('a', 1), 'as')
-        self.assertEqual(completer.complete('as', 2), 'assert')
-        self.assertEqual(completer.complete('an', 0), 'and')
+        self.assertEqual(completer.complete('a', 0), 'and ')
+        self.assertEqual(completer.complete('a', 1), 'as ')
+        self.assertEqual(completer.complete('as', 2), 'assert ')
+        self.assertEqual(completer.complete('an', 0), 'and ')
+        self.assertEqual(completer.complete('pa', 0), 'pass')
+        self.assertEqual(completer.complete('Fa', 0), 'False')
+        self.assertEqual(completer.complete('el', 0), 'elif ')
+        self.assertEqual(completer.complete('el', 1), 'else')
 
 if __name__ == '__main__':
     unittest.main()
diff -r 8f91b475c2fd Misc/NEWS
--- a/Misc/NEWS	Thu Sep 24 14:36:00 2015 +0300
+++ b/Misc/NEWS	Thu Sep 24 15:15:13 2015 +0300
@@ -27,6 +27,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #25209: rlcomplete now can add a space or a colon after completed keyword.
+
 - Issue #22241: timezone.utc name is now plain 'UTC', not 'UTC-00:00'.
 
 - Issue #23517: fromtimestamp() and utcfromtimestamp() methods of