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24 lines
1 KiB
TeX
24 lines
1 KiB
TeX
\section{Built-in Module \sectcode{dbm}}
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\bimodindex{dbm}
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Dbm provides python programs with an interface to the unix \code{ndbm}
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database library. Dbm objects are of the mapping type, so they can be
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handled just like objects of the built-in \dfn{dictionary} type,
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except that keys and values are always strings, and printing a dbm
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object doesn't print the keys and values.
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The module defines the following constant and functions:
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\renewcommand{\indexsubitem}{(in module dbm)}
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\begin{excdesc}{error}
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Raised on dbm-specific errors, such as I/O errors. \code{KeyError} is
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raised for general mapping errors like specifying an incorrect key.
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\end{excdesc}
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\begin{funcdesc}{open}{filename\, rwmode\, filemode}
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Open a dbm database and return a mapping object. \var{filename} is
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the name of the database file (without the \file{.dir} or \file{.pag}
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extensions), \var{rwmode} is \code{'r'}, \code{'w'} or \code{'rw'} as for
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\code{open}, and \var{filemode} is the unix mode of the file, used only
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when the database has to be created.
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\end{funcdesc}
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