问AttributeError:模块'tensorflow.python.keras.api._v2.keras.backend‘没有特性“”set_image_dim_ordering“”

EN

#Here are some codes which are related to the problem above.

import os
import keras
from tensorflow.keras import backend as K
from keras import objectives
from keras.layers import Input, merge
from keras.layers.advanced_activations import LeakyReLU
from keras.layers.convolutional import Convolution2D, Deconvolution2D
from keras.layers.core import Activation, Dropout
from keras.layers.normalization import BatchNormalization
from keras.models import Model
from keras.optimizers import Adam

KERAS_2 = keras.__version__[0] == '2'
try:
    # keras 2 imports
    from keras.layers.convolutional import Conv2DTranspose
    from keras.layers.merge import Concatenate
except ImportError:
    print("keras 2 layers could not be imported defaulting to keras1")
    KERAS_2 = False

K.set_image_dim_ordering('th') #here is where the problem occurs at

#The first problem.
Traceback (most recent call last):
  File "C:\zzProject_ML\vess2ret-master\train.py", line 326, in <module>
    batch_size=params.batch_size, is_binary=params.is_b_binary)
  File "C:\zzProject_ML\vess2ret-master\models.py", line 378, in g_unet
    i = Input(shape=(in_ch, 512, 512))
  File "C:\Users\10580\Anaconda3\envs\project_ML\lib\site-packages\keras\engine\input_layer.py", line 178, in Input
    input_tensor=tensor)
  File "C:\Users\10580\Anaconda3\envs\project_ML\lib\site-packages\keras\legacy\interfaces.py", line 91, in wrapper
    return func(*args, **kwargs)
  File "C:\Users\10580\Anaconda3\envs\project_ML\lib\site-packages\keras\engine\input_layer.py", line 39, in __init__
    name = prefix + '_' + str(K.get_uid(prefix))
  File "C:\Users\10580\Anaconda3\envs\project_ML\lib\site-packages\keras\backend\tensorflow_backend.py", line 74, in get_uid
    graph = tf.get_default_graph()
AttributeError: module 'tensorflow' has no attribute 'get_default_graph'

#The second problem.
Using TensorFlow backend.
Traceback (most recent call last):
  File "C:\zzProject_ML\vess2ret-master\train.py", line 7, in <module>
    import models as m
  File "C:\zzProject_ML\vess2ret-master\models.py", line 25, in <module>
    K.set_image_dim_ordering('th')
AttributeError: module 'tensorflow.python.keras.api._v2.keras.backend' has no attribute 'set_image_dim_ordering'