Are *parameters calls lazy?

Possible Duplicate:
Do python's variable length arguments (*args) expand a generator at function call time?

Let's say you have a function like this:

def give_me_many(*elements):
   #do something...

And you call it like that:

generator_expr = (... for ... in ... )
give_me_many(*generator_expr)

Will the elements be called lazily or will the generator run through all the possibly millions of elements before the function can be executed?