Christopher Lee <l...@chem.ucla.edu> added the comment: Another reason this issue is really important, is that the lack of a consistent iter() interface for dbm.* makes shelve iteration not scalable; i.e. trying to iterate on a Shelf will run self.dict.keys() to load the entire index into memory. This seems contrary to a primary purpose of shelve, namely to store the index on-disk so as to avoid having to keep the whole index in memory.
I suspect that for most users, shelve is the main way they will access the dbm.* interfaces. Therefore, fixing the dbm.* interfaces so that shelve is scalable seems like an important need. Once dbm and gdbm support the iterator protocol, it will be trivial to add an __iter__() method to shelve.Shelf, that simply returns iter(self.dict). ---------- nosy: +foobaron _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5736> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
