File: __init__.py

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python-pmw 0.6.2-0.1
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# This file is executed when the Pmw package is imported.  It creates
# a lazy importer/dynamic loader for Pmw and replaces the Pmw module
# with it.  Even though the loader from the most recent installed
# version of Pmw is used, the user is able to specify which version of
# Pmw megawidgets to load by using the setversion() function of the
# loader.

# This is the only file in Pmw which is not part of a particular Pmw
# release.

import sys
import os

# First get a list of all subdirectories containing versions of Pmw.
_dir = __path__[0]
_listdir = os.listdir(_dir)
_instdirs = filter(lambda x: x[:4] == 'Pmw_', _listdir)
_instdirs.sort()
_instdirs.reverse()

# Using the latest version import the dynamic loader.
_loader = 'Pmw.' + _instdirs[0] + '.lib.PmwLoader'
__import__(_loader)
_mod = sys.modules[_loader]

# Create the dynamic loader and install it into sys.modules.
sys.modules['_Pmw'] = sys.modules['Pmw']
sys.modules['Pmw'] = _mod.PmwLoader(_dir, _instdirs, _listdir)