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#5942: Copy over flag table from dbm.rst which is clearer.

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Georg Brandl 2009-05-17 08:36:04 +00:00
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Doc/library/anydbm.rst
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@ -27,19 +27,33 @@ these modules is installed, the slow-but-simple implementation in module
Open the database file *filename* and return a corresponding object.
If the database file already exists, the :mod:`whichdb` module is used to
determine its type and the appropriate module is used; if it does not exist, the
first module listed above that can be imported is used.
If the database file already exists, the :mod:`whichdb` module is used to
determine its type and the appropriate module is used; if it does not exist,
the first module listed above that can be imported is used.
The optional *flag* argument can be ``'r'`` to open an existing database for
reading only, ``'w'`` to open an existing database for reading and writing,
``'c'`` to create the database if it doesn't exist, or ``'n'``, which will
always create a new empty database. If not specified, the default value is
``'r'``.
The optional *flag* argument must be one of these values:
+---------+-------------------------------------------+
| Value | Meaning |
+=========+===========================================+
| ``'r'`` | Open existing database for reading only |
| | (default) |
+---------+-------------------------------------------+
| ``'w'`` | Open existing database for reading and |
| | writing |
+---------+-------------------------------------------+
| ``'c'`` | Open database for reading and writing, |
| | creating it if it doesn't exist |
+---------+-------------------------------------------+
| ``'n'`` | Always create a new, empty database, open |
| | for reading and writing |
+---------+-------------------------------------------+
If not specified, the default value is ``'r'``.
The optional *mode* argument is the Unix mode of the file, used only when the
database has to be created. It defaults to octal ``0666`` (and will be modified
by the prevailing umask).
database has to be created. It defaults to octal ``0666`` (and will be
modified by the prevailing umask).
.. exception:: error