[issue21670] Add repr to shelve.Shelf

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I don't think this is right repr for shelve. As file's repr doesn't read and expose a content of a file, shelve's repr shouldn't read and expose all database content.

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21670>
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