ImportError: cannot import name ‘backend_config‘ from ‘tensorflow.python.keras‘

ImportError: cannot import name ‘backend_config’ from ‘tensorflow.python.keras’
今天在搞bert的时候想试试用keras_bert试试，但是在引入keras_bert的时候报错了。

引入命令：

from keras_bert import load_trained_model_from_checkpoint, Tokenizer

报错如下：

Traceback (most recent call last):
  File "/Bert/bert_test.py", line 34, in <module>
    from keras_bert import load_trained_model_from_checkpoint, Tokenizer
  File "/anaconda3/envs/dssm/lib/python3.7/site-packages/keras_bert/__init__.py", line 1, in <module>
    from .bert import *
  File "/anaconda3/envs/dssm/lib/python3.7/site-packages/keras_bert/bert.py", line 9, in <module>
    from .optimizers import AdamWarmup
  File "/anaconda3/envs/dssm/lib/python3.7/site-packages/keras_bert/optimizers/__init__.py", line 1, in <module>
    from .util import *
  File "/anaconda3/envs/dssm/lib/python3.7/site-packages/keras_bert/optimizers/util.py", line 1, in <module>
    from .warmup_v2 import AdamWarmup
  File "/anaconda3/envs/dssm/lib/python3.7/site-packages/keras_bert/optimizers/warmup_v2.py", line 4, in <module>
    from tensorflow.python.keras import backend_config
ImportError: cannot import name 'backend_config' from 'tensorflow.python.keras' (/anaconda3/envs/dssm/lib/python3.7/site-packages/tensorflow/python/keras/__init__.py)

在网上尝试了很多种方法，包括更改keras的版本，和tensorflow对应起来，这些都不行！

最后尝试用下面方法成功！

解决办法：

/anaconda3/envs/dssm/lib/python3.7/site-packages/keras_bert/optimizers/warmup_v2.py

这个文件里面去改import参数：

from tensorflow.python.keras import backend_config
修改为：
from tensorflow.python.keras import backend as backend_config

成功！！！