84     def __init__(self, dict, protocol=None, writeback=False,  argument
90         self.writeback = writeback
115             if self.writeback:
120         if self.writeback:
165         if self.writeback and self.cache:
166             self.writeback = False
169             self.writeback = True
188     def __init__(self, dict, protocol=None, writeback=False,  argument
190         Shelf.__init__(self, dict, protocol, writeback, keyencoding)
225     def __init__(self, filename, flag='c', protocol=None, writeback=False):  argument
227         Shelf.__init__(self, dbm.open(filename, flag), protocol, writeback)
230 def open(filename, flag='c', protocol=None, writeback=False):  argument
243     return DbfilenameShelf(filename, flag, protocol, writeback)