--- /home/mark/opt/python33/lib/python3.3/multiprocessing/forking.py	2013-08-21 09:18:42.494524037 +0100
+++ forking.py	2014-02-12 12:55:49.867496406 +0000
@@ -87,8 +87,10 @@
     class Popen(object):
 
         def __init__(self, process_obj):
-            sys.stdout.flush()
-            sys.stderr.flush()
+            if sys.stdout is not None:
+                sys.stdout.flush()
+            if sys.stderr is not None:
+                sys.stderr.flush()
             self.returncode = None
--- /home/mark/opt/python33/lib/python3.3/multiprocessing/managers.py	2013-08-21 09:18:42.498524038 +0100
+++ managers.py	2014-02-12 12:55:53.543280491 +0000
@@ -157,7 +157,7 @@
             except (KeyboardInterrupt, SystemExit):
                 pass
         finally:
-            if sys.stdout != sys.__stdout__:
+            if sys.stdout is None or sys.stdout != sys.__stdout__:
                 util.debug('resetting stdout, stderr')
                 sys.stdout = sys.__stdout__
                 sys.stderr = sys.__stderr__
--- /home/mark/opt/python33/lib/python3.3/multiprocessing/process.py	2013-08-21 09:18:42.506524038 +0100
+++ process.py	2014-02-12 12:55:57.667038272 +0000
@@ -265,17 +265,21 @@
             elif isinstance(e.args[0], int):
                 exitcode = e.args[0]
             else:
-                sys.stderr.write(str(e.args[0]) + '\n')
+                if sys.stderr is not None:
+                    sys.stderr.write(str(e.args[0]) + '\n')
                 exitcode = 0 if isinstance(e.args[0], str) else 1
         except:
             exitcode = 1
             import traceback
-            sys.stderr.write('Process %s:\n' % self.name)
+            if sys.stderr is not None:
+                sys.stderr.write('Process %s:\n' % self.name)
             traceback.print_exc()
         finally:
             util.info('process exiting with exitcode %d' % exitcode)
-            sys.stdout.flush()
-            sys.stderr.flush()
+            if sys.stdout is not None:
+                sys.stdout.flush()
+            if sys.stderr is not None:
+                sys.stderr.flush()
 
         return exitcode