Issues #10867: remove old cPickle imports from multiprocessing

Lib/multiprocessing/forking.py

@@ -151,14 +151,10 @@ else:
     import _subprocess
     import time
 
+    from pickle import dump, load, HIGHEST_PROTOCOL
     from ._multiprocessing import win32, Connection, PipeConnection
     from .util import Finalize
 
-    #try:
-    #    from cPickle import dump, load, HIGHEST_PROTOCOL
-    #except ImportError:
-    from pickle import load, HIGHEST_PROTOCOL
-
     def dump(obj, file, protocol=None):
         ForkingPickler(file, protocol).dump(obj)
 

Lib/multiprocessing/managers.py

@@ -21,16 +21,12 @@ import array
 import queue
 
 from traceback import format_exc
+from pickle import PicklingError
 from multiprocessing import Process, current_process, active_children, Pool, util, connection
 from multiprocessing.process import AuthenticationString
 from multiprocessing.forking import exit, Popen, assert_spawning, ForkingPickler
 from multiprocessing.util import Finalize, info
 
-try:
-    from cPickle import PicklingError
-except ImportError:
-    from pickle import PicklingError
-
 #
 # Register some things for pickling
 #

Misc/NEWS

@@ -132,6 +132,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #10867: Remove python2.x try: except: imports for old cPickle from
+  multiprocessing. 
+
 - Issue #4959: inspect.formatargspec now works for keyword only arguments
   without defaults.