[issue6137] Pickle migration: Should pickle map "copy_reg" to "copyreg"?

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

A new patch which also includes reverse mappings, so that protocol <= 2
pickles created with 3.x can also work under 2.x.
(that is, it also solves #3675)

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dependencies: +Python 2.6 can't read sets pickled with Python 3.0
Added file: http://bugs.python.org/file14177/compat_pickle3.diff

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