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1 \section{Standard Module \sectcode{whichdb}}
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2 \stmodindex{whichdb}
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3
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4 The single function in this module attempts to guess which of the
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5 several simple database modules available--dbm, gdbm, or
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6 dbhash--should be used to open a given file.
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7
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8 \renewcommand{\indexsubitem}{(in module whichdb)}
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9 \begin{funcdesc}{whichdb}{filename}
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10 Returns one of the following values: \code{None} if the file can't be
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11 opened because it's unreadable or doesn't exist; the empty string
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12 (\code{""}) if the file's format can't be guessed; or a string
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13 containing the required module name, such as \code{"dbm"} or
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14 \code{"gdbm"}.
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15 \end{funcdesc}
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16
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