1 \section{Standard Module
\module{whichdb
}}
5 The single function in this module attempts to guess which of the
6 several simple database modules available--dbm, gdbm, or
7 dbhash--should be used to open a given file.
9 \begin{funcdesc
}{whichdb
}{filename
}
10 Returns one of the following values:
\code{None
} if the file can't be
11 opened because it's unreadable or doesn't exist; the empty string
12 (
\code{""
}) if the file's format can't be guessed; or a string
13 containing the required module name, such as
\code{"dbm"
} or
