Fixed some test structures. Thanks Mark Dickinson.
diff --git a/Lib/decimal.py b/Lib/decimal.py
index dc44170..aee558a 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -477,11 +477,7 @@
                  # General Decimal Arithmetic Specification
              return +s  # Convert result to normal context
 
-    """
-    # The string below can't be included in the docstring until Python 2.6
-    # as the doctest module doesn't understand __future__ statements
-    """
-    >>> from __future__ import with_statement
+    >>> setcontext(DefaultContext)
     >>> print getcontext().prec
     28
     >>> with localcontext():