(self, prefix=u"")
Return an Iterator over all keys currently in the store, in any
        order.
        If prefix is not the empty string, iterates only over all keys starting with prefix.

        :raises exceptions.IOError: If there was an error accessing the store.
Return an Iterator over all keys currently in the store, in any
        order.
        If prefix is not the empty string, iterates only over all keys starting with prefix.
Return an Iterator over all keys currently in the store in any order . If prefix is not the empty string iterates only over all keys starting with prefix .
def iter_keys(self, prefix=u""):
        """Return an Iterator over all keys currently in the store, in any
        order.
        If prefix is not the empty string, iterates only over all keys starting with prefix.

        :raises exceptions.IOError: If there was an error accessing the store.
        """
        raise NotImplementedError
def iter_keys ( self , prefix = u"" ) : raise NotImplementedError