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List:       python-list
Subject:    Re: objects as mutable dictionary keys
From:       Peter Maas <peter () somewhere ! com>
Date:       2004-12-28 9:42:11
Message-ID: 33co6sF3viiguU1 () individual ! net
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John Roth schrieb:
> No. The basic answer is that it's up to the object whether
> it will allow itself to be used as a dictionary key. In other
> words, if the designer of an object thinks it makes sense
> for instances to be dictionary keys, then he can supply a
> __hash__() method. If he doesn't, then he doesn't supply
> such a method, and it won't work.

Except for classic objects which can be used as dictionary
keys without having __hash__().

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