11.7. whichdb Guess which DBM module created a database

Note

The whichdb modules only function has been put into the dbm module in Python 3. The 2to3 tool will automatically adapt imports when converting your sources to Python 3.

The single function in this module attempts to guess which of the several simple database modules availabledbm, gdbm, or dbhashshould be used to open a given file.

whichdb.whichdb(filename)

Returns one of the following values: None if the file cant be opened because its unreadable or doesnt exist; the empty string ('') if the files format cant be guessed; or a string containing the required module name, such as 'dbm' or 'gdbm'.