| \section{\module{whichdb} --- |
| Guess which DBM module created a database} |
| |
| \declaremodule{standard}{whichdb} |
| \modulesynopsis{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. |
| |
| \begin{funcdesc}{whichdb}{filename} |
| Returns one of the following values: \code{None} if the file can't be |
| opened because it's unreadable or doesn't exist; the empty string |
| (\code{""}) if the file's format can't be guessed; or a string |
| containing the required module name, such as \code{"dbm"} or |
| \code{"gdbm"}. |
| \end{funcdesc} |
| |