mirror of https://github.com/python/cpython
25 lines
931 B
ReStructuredText
25 lines
931 B
ReStructuredText
:mod:`whichdb` --- Guess which DBM module created a database
|
|
============================================================
|
|
|
|
.. module:: whichdb
|
|
:synopsis: Guess which DBM-style module created a given database.
|
|
|
|
.. note::
|
|
The :mod:`whichdb` module's only function has been put into the :mod:`dbm`
|
|
module in Python 3. The :term:`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 available--\ :mod:`dbm`, :mod:`gdbm`, or :mod:`dbhash`\
|
|
--should be used to open a given file.
|
|
|
|
|
|
.. function:: 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'``.
|
|
|