/usr/lib/python2.7/dist-packages/enable/toolkit.py is in python-enable 4.3.0-2.
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# Copyright (c) 2007, Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
#------------------------------------------------------------------------------
# Standard library imports.
import sys
from traceback import format_exception_only
# Enthought library imports.
from traits.etsconfig.api import ETSConfig
# This is set to the api module path for the selected backend.
_toolkit_backend = None
def _init_toolkit():
""" Initialise the current toolkit. """
if not ETSConfig.toolkit:
# Force Traits to decide on its toolkit if it hasn't already
from traitsui.toolkit import toolkit as traits_toolkit
traits_toolkit()
# Import the selected backend
backend = 'enable.%s.%s' % (ETSConfig.toolkit, ETSConfig.kiva_backend)
try:
__import__(backend)
except ImportError, SystemExit:
t, v, _tb = sys.exc_info()
raise ImportError, "Unable to import the %s backend for the %s " \
"toolkit (reason: %s)." % (ETSConfig.kiva_backend, ETSConfig.toolkit,
format_exception_only(t, v))
# Save the imported toolkit module.
global _toolkit_backend
_toolkit_backend = backend
# Do this once then disappear.
_init_toolkit()
del _init_toolkit
def toolkit_object(name):
""" Return the toolkit specific object with the given name. """
try:
be_obj = getattr(sys.modules[_toolkit_backend], name)
except AttributeError:
raise NotImplementedError("the %s.%s enable backend doesn't implement %s" %
(ETSConfig.toolkit, ETSConfig.kiva_backend, name))
return be_obj
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