1 :mod:`whichdb` --- Guess which DBM module created a database 2 ============================================================ 3 4 .. module:: whichdb 5 :synopsis: Guess which DBM-style module created a given database. 6 7 .. note:: 8 The :mod:`whichdb` module's only function has been put into the :mod:`dbm` 9 module in Python 3. The :term:`2to3` tool will automatically adapt imports 10 when converting your sources to Python 3. 11 12 13 The single function in this module attempts to guess which of the several simple 14 database modules available:mod:`dbm`, :mod:`gdbm`, or :mod:`dbhash`\ 15 should be used to open a given file. 16 17 18 .. function:: whichdb(filename) 19 20 Returns one of the following values: ``None`` if the file can't be opened 21 because it's unreadable or doesn't exist; the empty string (``''``) if the 22 file's format can't be guessed; or a string containing the required module name, 23 such as ``'dbm'`` or ``'gdbm'``. 24 25
