From 65d4ea05d2b68df68305db82d4121246cfeb461e Mon Sep 17 00:00:00 2001
From: Jeremy Hylton <jeremy@alum.mit.edu>
Date: Wed, 16 Feb 2000 00:49:47 +0000
Subject: add flatten helper function

---
 Lib/compiler/misc.py            | 11 +++++++++++
 Tools/compiler/compiler/misc.py | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/Lib/compiler/misc.py b/Lib/compiler/misc.py
index a281c10..dae42d4 100644
--- a/Lib/compiler/misc.py
+++ b/Lib/compiler/misc.py
@@ -1,3 +1,14 @@
+import types
+
+def flatten(tup):
+    elts = []
+    for elt in tup:
+        if type(elt) == types.TupleType:
+            elts = elts + flatten(elt)
+        else:
+            elts.append(elt)
+    return elts
+
 class Set:
     def __init__(self):
 	self.elts = {}
diff --git a/Tools/compiler/compiler/misc.py b/Tools/compiler/compiler/misc.py
index a281c10..dae42d4 100644
--- a/Tools/compiler/compiler/misc.py
+++ b/Tools/compiler/compiler/misc.py
@@ -1,3 +1,14 @@
+import types
+
+def flatten(tup):
+    elts = []
+    for elt in tup:
+        if type(elt) == types.TupleType:
+            elts = elts + flatten(elt)
+        else:
+            elts.append(elt)
+    return elts
+
 class Set:
     def __init__(self):
 	self.elts = {}
-- 
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