namespaces getting confusing

[Mark Robinson]

can anyone explain why I get the following attribute error. I know it is 
something to do with me misusing namespaces and imports but I dunno what.

%Motif.py
import param

def readSeq(filename)
	#bla bla bla

#some other def's


#################

%param.py
import os, Motif

#various variable initialised
seq = Motif.readSeq



###############
%Camel.py
import os, Motif, param #and others

#other non relevant code


###########

I get the following error:

Traceback (most recent call last):
   File "D:\blobby\param.py", line 1, in ?
     import os, Motif
   File "D:\blobby\Motif.py", line 1, in ?
     import string, math, pickle, param
   File "D:\blobby\param.py", line 30, in ?
     seq = Motif.readSeq(filename)
AttributeError: 'Motif' module has no attribute 'readSeq'