mhoff

def dmerge(x, (k,v)):
    if k in x:
        dmerge(x[k], v.items()[0])
    else:
        x[k] = v 
    return x

def hdict_from_dict(src):
    return reduce(lambda x, y: dmerge(x, y), [hdict(k, v).items()[0] for k, v in src.items()], {})