Ignore ImportWarning by default
diff --git a/Lib/warnings.py b/Lib/warnings.py
index 939184f..b7fac69 100644
--- a/Lib/warnings.py
+++ b/Lib/warnings.py
@@ -261,3 +261,4 @@
 # Module initialization
 _processoptions(sys.warnoptions)
 simplefilter("ignore", category=PendingDeprecationWarning, append=1)
+simplefilter("ignore", category=ImportWarning, append=1)