>> A frozendict can be used as a member of a set or as a key in a dictionary. >> >> For example, frozendict is indirectly needed when you want to use an >> object as a key of a dict, whereas one attribute of this object is a >> dict. > > It isn't. You just have to define __hash__ correctly.
Define __hash__ on a mutable object can be surprising. Or do you mean that you deny somehow the modification of the dict attribute, and convert the dict to a immutable object before hashing it? >> frozendict helps also in threading and multiprocessing. > > How so? For example, you don't need a lock to read the frozendict content, because you cannot modify the content. Victor _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
