making python 3 exception backward compatible

Question

What is the backward (2.6 if possible) compatible syntax of this code block (from PEP 3109) :

try:
   self.spawn(pp_args)
except DistutilsExecError as msg:
   raise CompileError from msg

Answer 1

This is as close as you'd come in python-2.x:

try:
   self.spawn(pp_args)
except DistutilsExecError as msg:
    print "DistutilsExecError : " + str(DistutilsExecError(msg))
    print
    print "The above exception was the direct cause of the following exception:"
    raise CompileError