[issue18352] collections.Counter with added attributes are not deepcopied properly.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

What about pickling? OrderedDict.__reduce__() saves added attributes, but Counter.__reduce__() does not. One of them should be changed for consistency.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18352>
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