Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0].

1 files changed, 3 insertions, 3 deletions

diff --git a/Lib/multiprocessing/sharedctypes.py b/Lib/multiprocessing/sharedctypes.py
index 4258f591c4..25cbcf2ae4 100644
--- a/Lib/multiprocessing/sharedctypes.py
+++ b/Lib/multiprocessing/sharedctypes.py
@@ -13,8 +13,8 @@ import weakref
 from . import heap
 from . import get_context
 
-from .context import assert_spawning
-from .reduction import ForkingPickler
+from .context import reduction, assert_spawning
+_ForkingPickler = reduction.ForkingPickler
 
 __all__ = ['RawValue', 'RawArray', 'Value', 'Array', 'copy', 'synchronized']
 
@@ -134,7 +134,7 @@ def reduce_ctype(obj):
 def rebuild_ctype(type_, wrapper, length):
     if length is not None:
         type_ = type_ * length
-    ForkingPickler.register(type_, reduce_ctype)
+    _ForkingPickler.register(type_, reduce_ctype)
     buf = wrapper.create_memoryview()
     obj = type_.from_buffer(buf)
     obj._wrapper = wrapper