From 133ebff5c854a50f0dcfb624d8930166bc4cf7d3 Mon Sep 17 00:00:00 2001
From: Michael Foord <fuzzyman@voidspace.org.uk>
Date: Sun, 26 Jul 2009 21:11:42 +0000
Subject: Issue 6581. Michael Foord

---
 Lib/inspect.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Lib/inspect.py b/Lib/inspect.py
index 1685bfc..318fa07 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -947,7 +947,10 @@ def getinnerframes(tb, context=1):
         tb = tb.tb_next
     return framelist
 
-currentframe = sys._getframe
+if hasattr(sys, '_getframe'):
+    currentframe = sys._getframe
+else:
+    currentframe = lambda _=None: None
 
 def stack(context=1):
     """Return a list of records for the stack above the caller's frame."""
-- 
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