Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer
Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority
:mod:`anydbm` --- Generic access to DBM-style databases
=======================================================
.. module:: anydbm
:synopsis: Generic interface to DBM-style database modules.
.. note::
The :mod:`anydbm` module has been renamed to :mod:`dbm` in Python 3.0. The
:term:`2to3` tool will automatically adapt imports when converting your
sources to 3.0.
.. index::
module: dbhash
module: bsddb
module: gdbm
module: dbm
module: dumbdbm
:mod:`anydbm` is a generic interface to variants of the DBM database ---
:mod:`dbhash` (requires :mod:`bsddb`), :mod:`gdbm`, or :mod:`dbm`. If none of
these modules is installed, the slow-but-simple implementation in module
:mod:`dumbdbm` will be used.
.. function:: open(filename[, flag[, mode]])
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.
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 *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).
.. exception:: error
A tuple containing the exceptions that can be raised by each of the supported
modules, with a unique exception also named :exc:`anydbm.error` as the first
item --- the latter is used when :exc:`anydbm.error` is raised.
The object returned by :func:`open` supports most of the same functionality as
dictionaries; keys and their corresponding values can be stored, retrieved, and
deleted, and the :meth:`has_key` and :meth:`keys` methods are available. Keys
and values must always be strings.
The following example records some hostnames and a corresponding title, and
then prints out the contents of the database::
import anydbm
# Open database, creating it if necessary.
db = anydbm.open('cache', 'c')
# Record some values
db['www.python.org'] = 'Python Website'
db['www.cnn.com'] = 'Cable News Network'
# Loop through contents. Other dictionary methods
# such as .keys(), .values() also work.
for k, v in db.iteritems():
print k, '\t', v
# Storing a non-string key or value will raise an exception (most
# likely a TypeError).
db['www.yahoo.com'] = 4
# Close when done.
db.close()
.. seealso::
Module :mod:`dbhash`
BSD ``db`` database interface.
Module :mod:`dbm`
Standard Unix database interface.
Module :mod:`dumbdbm`
Portable implementation of the ``dbm`` interface.
Module :mod:`gdbm`
GNU database interface, based on the ``dbm`` interface.
Module :mod:`shelve`
General object persistence built on top of the Python ``dbm`` interface.
Module :mod:`whichdb`
Utility module used to determine the type of an existing database.