pytorch - use the vocab of one data field into another data field in torchtext

Question

In pytorch's torchtext library,

I have two data fields

from torchtext import data,TabularDataset
A = data.Field(sequential=True)
B = data.Field(sequential=True)

where A points to one column of TabularDataset and B points to another column of TabularDataset. But the vocabulary is mostly same in both the columns.

I want to do something like this,

Get the A's vocab

A.build_vocab(TabularDataset)
A_vocab = A.vocab.stoi

and give it to B

B.vocab(A_vocab)

Answer 1

等待大神答复