Reference

ActivePython 2.5

Python Documentation

Library Reference

13. Data Persistence

13.1 pickle -- Python object serialization

13.2 cPickle -- A faster pickle

13.3 copy reg -- Register pickle support functions

13.4 shelve -- Python object persistence

13.5 marshal -- Internal Python object serialization

13.6 anydbm -- Generic access to DBM-style databases

13.7 whichdb -- Guess which DBM module created a database

13.8 dbm -- Simple ``database'' interface

13.9 gdbm -- GNU's reinterpretation of dbm

13.10 dbhash -- DBM-style interface to the BSD database library

13.11 bsddb -- Interface to Berkeley DB library

13.12 dumbdbm -- Portable DBM implementation

13.13 sqlite3 -- DB-API 2.0 interface for SQLite databases

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13.7 `whichdb` -- Guess which DBM module created a database

The single function in this module attempts to guess which of the several simple database modules available-dbm, gdbm, or dbhash-should be used to open a given file.

whichdb( filename): Returns one of the following values: None if the file can't be opened because it's unreadable or doesn't exist; the empty string ('') if the file's format can't be guessed; or a string containing the required module name, such as 'dbm' or 'gdbm'.

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