Index: Lib/test/test_decimal.py
===================================================================
--- Lib/test/test_decimal.py	(revision 77468)
+++ Lib/test/test_decimal.py	(working copy)
@@ -485,25 +485,21 @@
         d = Decimal(45)
         e = Decimal(d)
         self.assertEqual(str(e), '45')
-        self.assertNotEqual(id(d), id(e))
 
         #very large positive
         d = Decimal(500000123)
         e = Decimal(d)
         self.assertEqual(str(e), '500000123')
-        self.assertNotEqual(id(d), id(e))
 
         #negative
         d = Decimal(-45)
         e = Decimal(d)
         self.assertEqual(str(e), '-45')
-        self.assertNotEqual(id(d), id(e))
 
         #zero
         d = Decimal(0)
         e = Decimal(d)
         self.assertEqual(str(e), '0')
-        self.assertNotEqual(id(d), id(e))
 
     def test_explicit_context_create_decimal(self):
 
@@ -789,7 +785,7 @@
         en_US = {
             'decimal_point' : '.',
             'grouping' : [3, 3, 0],
-            'thousands_sep': ','
+            'thousands_sep' : ','
             }
 
         fr_FR = {
@@ -1099,8 +1095,8 @@
     test2 = d1/d3
     cls.finish1.set()
 
-    cls.assertEqual(test1, Decimal('0.3333333333333333333333333333'))
-    cls.assertEqual(test2, Decimal('0.3333333333333333333333333333'))
+    cls.assertEqual(test1, Decimal('0.333333333333333333333333'))
+    cls.assertEqual(test2, Decimal('0.333333333333333333333333'))
     return
 
 def thfunc2(cls):
@@ -1113,7 +1109,7 @@
     cls.synchro.set()
     cls.finish2.set()
 
-    cls.assertEqual(test1, Decimal('0.3333333333333333333333333333'))
+    cls.assertEqual(test1, Decimal('0.333333333333333333333333'))
     cls.assertEqual(test2, Decimal('0.333333333333333333'))
     return
 
@@ -1130,7 +1126,11 @@
     # that hangs IDLE and I couldn't find it
 
     def test_threading(self):
-        #Test the "threading isolation" of a Context.
+        # Test the "threading isolation" of a Context.  Also test changing
+        # the DefaultContext, which acts as a template for the thread-local
+        # contexts.
+        saveprec = DefaultContext.prec
+        DefaultContext.prec = 24
 
         self.synchro = threading.Event()
         self.finish1 = threading.Event()
@@ -1144,6 +1144,8 @@
 
         self.finish1.wait()
         self.finish2.wait()
+
+        DefaultContext.prec = saveprec
         return
 
     if threading is None:
@@ -1570,7 +1572,7 @@
 
     def test_from_float(self):
 
-        class  MyDecimal(Decimal):
+        class MyDecimal(Decimal):
             pass
 
         r = MyDecimal.from_float(0.1)
@@ -1670,12 +1672,12 @@
         # check that the result (numeric result + flags raised) of an
         # arithmetic operation doesn't depend on the current flags
 
-        context = Context(prec=9, Emin = -999999999, Emax = 999999999,
-                    rounding=ROUND_HALF_EVEN, traps=[], flags=[])
+        context = Context(prec=9, Emin = -425000000, Emax = 425000000,
+                          rounding=ROUND_HALF_EVEN, traps=[], flags=[])
 
         # operations that raise various flags, in the form (function, arglist)
         operations = [
-            (context._apply, [Decimal("100E-1000000009")]),
+            (context._apply, [Decimal("100E-425000010")]),
             (context.sqrt, [Decimal(2)]),
             (context.add, [Decimal("1.23456789"), Decimal("9.87654321")]),
             (context.multiply, [Decimal("1.23456789"), Decimal("9.87654321")]),