fixup! ERP5Type/patches/DateTimePatch: fix name of copy_reg._reconstructor

product/ERP5Type/patches/DateTimePatch.py

@@ -32,6 +32,7 @@ import math
 from DateTime.DateTime import _calcSD, _calcDependentSecond, _calcYMDHMS,\
 getDefaultDateFormat, _correctYear, _calcHMS, _calcDependentSecond2, DateTimeError,\
 SyntaxError, DateError, TimeError, localtime, time
+from Products.ERP5Type import IS_ZOPE2
 
 STATE_KEY = 'str'
 
@@ -297,12 +298,13 @@ DateTimeKlass.SyntaxError = SyntaxError
 DateTimeKlass.DateError = DateError
 DateTimeKlass.TimeError = TimeError
 
-# BBB undo patch from DateTime 2.12 , which patches
-# copy_reg._reconstructor with a function that appears as
-# `DateTime.DateTime._dt_reconstructor` in pickles.
-# See https://github.com/zopefoundation/DateTime/blob/2.12.8/src/DateTime/DateTime.py#L1863-L1874
-# This patch is no longer needed once we are using DateTime >= 3 so
-# it is not needed on python3 (copy_reg does not exist on python3)
-import copy_reg
-copy_reg._reconstructor.__module__ = 'copy_reg'
-copy_reg._reconstructor.__name__ = '_reconstructor'
+if IS_ZOPE2: # BBB Zope2
+  # BBB undo patch from DateTime 2.12 , which patches
+  # copy_reg._reconstructor with a function that appears as
+  # `DateTime.DateTime._dt_reconstructor` in pickles.
+  # See https://github.com/zopefoundation/DateTime/blob/2.12.8/src/DateTime/DateTime.py#L1863-L1874
+  # This patch is no longer needed once we are using DateTime >= 3 so
+  # it is not needed on python3 (copy_reg does not exist on python3)
+  import copy_reg
+  copy_reg._reconstructor.__module__ = 'copy_reg'
+  copy_reg._reconstructor.__name__ = '_reconstructor'