25 lines
931 B
ReStructuredText
25 lines
931 B
ReStructuredText
:mod:`whichdb` --- Guess which DBM module created a database
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============================================================
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.. module:: whichdb
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:synopsis: Guess which DBM-style module created a given database.
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.. note::
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The :mod:`whichdb` module's only function has been put into the :mod:`dbm`
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module in Python 3. The :term:`2to3` tool will automatically adapt imports
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when converting your sources to Python 3.
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The single function in this module attempts to guess which of the several simple
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database modules available—:mod:`dbm`, :mod:`gdbm`, or :mod:`dbhash`\
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—should be used to open a given file.
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.. function:: whichdb(filename)
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Returns one of the following values: ``None`` if the file can't be opened
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because it's unreadable or doesn't exist; the empty string (``''``) if the
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file's format can't be guessed; or a string containing the required module name,
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such as ``'dbm'`` or ``'gdbm'``.
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