Extending the dict class

[chosechu]

Hello Pythoneers:

I need to pass a list of named arguments to a function in a given
order,
and make sure these named arguments are retrieved using keys() in the
same order they were given. Example:

keyargs={}
keyargs['one']=1
keyargs['two']=2
keyargs['three']=3

myfunc(**keyargs)
-> myfunc would retrieve key arguments with keys() in the same order
as they were set, i.e. keyargs.keys() == ['one', 'two', 'three']

To achieve that, I subclassed dict and added the required lines
in __init__(), __setitem__() and keys(). I then assigned dict to
my new class but only get the desired behaviour for dictionaries
created like:
d=dict()
but not for dictionaries created like:
d={}
or
myfunc(**keyargs)

Is it possible to force dictionary creation in these case to use
my own dict class instead of the default one?

I guess we can formulate this as a more generic question: if I
want to modify the behaviour of the dictionary class, is there
any way to do it interpreter-wide so that special dict constructors
like those mentioned above use the modified version?

Thanks for helping