diff -r 96c51207e7cd Lib/idlelib/AutoComplete.py
--- a/Lib/idlelib/AutoComplete.py	Fri Aug 16 21:33:27 2013 +0300
+++ b/Lib/idlelib/AutoComplete.py	Fri Aug 16 20:01:45 2013 -0400
@@ -6,6 +6,7 @@
 import os
 import sys
 import string
+import importlib
 
 from idlelib.configHandler import idleConf
 
@@ -228,4 +229,11 @@
         """Lookup name in a namespace spanning sys.modules and __main.dict__"""
         namespace = sys.modules.copy()
         namespace.update(__main__.__dict__)
+        if name not in namespace:
+            # If name (the module to import) is misspelled or does not exist,
+            # an ImportError will be raised. The fetch_completions function
+            # will catch the error and return empty completion lists.
+            importlib.import_module(name)
+            namespace = sys.modules.copy()
+            namespace.update(__main__.__dict__)
         return eval(name, namespace)