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(python2.1-lib.info)whichdb

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Enter node , (file) or (file)node

Guess which DBM module created a database
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Guess which DBM-style module created a given 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''.