Traceback (most recent call last):


 "forum4.py", line 2, in <module>

from tkinter import *


 "/usr/local/lib/python2.7/dist-packages/tkinter/__init__.py", line 6, in <module>

from Tkinter import (_cnfmerge, _default_root, _flatten, _join, _setit,
ImportError: cannot import name _join

Traceback (most recent call last):


 "emmental/modeling_bert_masked.py", line 29, in <module>

from emmental import MaskedBertConfig


 "/home/default/ephemeral_drive/work/image_captioning/Oscar_edited/transformers/examples/research_projects/movement-pruning/emmental/__init__.py", line 3, in <module>

from .modeling_bert_masked import (


 "/home/default/ephemeral_drive/work/image_captioning/Oscar_edited/transformers/examples/research_projects/movement-pruning/emmental/modeling_bert_masked.py", line 33, in <module>

from transformers.models.bert.modeling_bert import ACT2FN, BertLayerNorm, load_tf_weights_in_bert
ImportError: cannot import name 'BertLayerNorm'
