#
# This example works with Python 2.2.
class MyDict_for_python_22(dict):
    def __init__(self, **kw):
        for key in kw.keys():
            self[key] = kw[key]
    def show(self):
        print 'Showing example for Python 2.2 ...'
        for key in self.keys():
            print 'key: %s  value: %s' % (key, self[key])

def test_for_python_22():
    d = MyDict_for_python_22(one=11, two=22, three=33)
    d.show()

test_for_python_22()

#
# This example works with Python 2.3.
#   Keyword support, when subclassing dictionaries, seems to have
#   been enhanced in Python 2.3.
class MyDict(dict):
    def show(self):
        print 'Showing example for Python 2.3 ...'
        for key in self.keys():
            print 'key: %s  value: %s' % (key, self[key])

def test():
    d = MyDict(one=11, two=22, three=33)
    d.show()

test()