anydbm is a generic interface to variants of the DBM database -- dbhash , gdbm , or dbm . If none of these modules is installed, the slow-but-simple implementation in module dumbdbm will be used.
The optional mode argument is the Unix mode of the file, used only when the database has to be created. It defaults to octal 0666 (and will be modified by the prevailing umask).
The object returned by open() supports most of the same functionality as dictionaries; keys and their corresponding values can be stored, retrieved, and deleted, and the has_key() and keys() methods are available. Keys and values must always be strings.