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annotate Doc/lib/libwhichdb.tex @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 99681ee86698
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1 \section{\module{whichdb} ---
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2 Guess which DBM module created a database}
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3
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4 \declaremodule{standard}{whichdb}
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5 \modulesynopsis{Guess which DBM-style module created a given database.}
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8 The single function in this module attempts to guess which of the
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9 several simple database modules available--\refmodule{dbm},
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10 \refmodule{gdbm}, or \refmodule{dbhash}--should be used to open a
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11 given file.
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13 \begin{funcdesc}{whichdb}{filename}
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14 Returns one of the following values: \code{None} if the file can't be
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15 opened because it's unreadable or doesn't exist; the empty string
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16 (\code{''}) if the file's format can't be guessed; or a string
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17 containing the required module name, such as \code{'dbm'} or
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18 \code{'gdbm'}.
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19 \end{funcdesc}
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