Filter a dictionary based on a constraint on the keys in a Pythonic way

How about this:

in python 2.x :

def slicedict(d, s):
    return {k:v for k,v in d.iteritems() if k.startswith(s)}

In python 3.x :

def slicedict(d, s):
    return {k:v for k,v in d.items() if k.startswith(s)}