ll = []
for i in tqdm(a.itertuples(index=False), total = len(a)):
    d1 = str(i.d1cid)
    d2 = str(i.d2cid)
    temp = i._asdict() # tranform named tuple into dict
    temp.update({k: int(v) for k,v in enumerate(np.mean([names[d1],names[d2]], axis=0))}) # merge two dict, first - created from named tuple, second - from dict comprehension of enumerating over an array
    ll.append(temp)