import a module with parameter in python

Is it possible to pass import a module with some parameter in python ?

All I mean by parameter is that there exists a variable in the module which is not initialized in that module, still I am using that variable in that module. In short, I want behaviour similar to function but unlike function, I want the variables of module to be exposed in the calling code.

eg

a.py

#lists like data, count, prob_distribution are constructed from training_pool (not initialized in this file)
x = pymc.Uniform('x', lower = 0, upper = 1)
rv = [ Multinomial("rv"+str(i), count[i], prob_distribution[i], value = data[i], observed=True) for i in xrange(0, len(count)) ]

b.py

import a  #I want some way tr pass value of training_pool
m = pymc.MCMC(a)

I want all random variables in a.py to be exposed to MCMC. I am open to a better approach for my problem at hand, but I would also like to know whteher passing arguments to modules is possible in python or not

from import a module with parameter in python