报错信息：

 Using TensorFlow backend.
    Traceback (most recent call last):
      File "train.py", line 6, in <module>
        from yolo import create_yolov3_model, dummy_loss
      File "/content/drive/MyDrive/yolo/yolo_plz_work/yolo.py", line 1, in <module>
        from keras.layers import Conv2D, Input, BatchNormalization, LeakyReLU, ZeroPadding2D, UpSampling2D, Lambda
      File "/usr/local/lib/python3.7/dist-packages/keras/__init__.py", line 3, in <module>
        from . import utils
      File "/usr/local/lib/python3.7/dist-packages/keras/utils/__init__.py", line 26, in <module>
        from .vis_utils import model_to_dot
      File "/usr/local/lib/python3.7/dist-packages/keras/utils/vis_utils.py", line 7, in <module>
        from ..models import Model
      File "/usr/local/lib/python3.7/dist-packages/keras/models.py", line 10, in <module>
        from .engine.input_layer import Input
      File "/usr/local/lib/python3.7/dist-packages/keras/engine/__init__.py", line 3, in <module>
        from .input_layer import Input
      File "/usr/local/lib/python3.7/dist-packages/keras/engine/input_layer.py", line 7, in <module>
        from .base_layer import Layer
      File "/usr/local/lib/python3.7/dist-packages/keras/engine/base_layer.py", line 12, in <module>
        from .. import initializers
      File "/usr/local/lib/python3.7/dist-packages/keras/initializers/__init__.py", line 124, in <module>
        populate_deserializable_objects()
      File "/usr/local/lib/python3.7/dist-packages/keras/initializers/__init__.py", line 49, in populate_deserializable_objects
        LOCAL.GENERATED_WITH_V2 = tf.__internal__.tf2.enabled()
      File "/usr/local/lib/python3.7/dist-packages/tensorflow_core/python/util/module_wrapper.py", line 193, in __getattr__
        attr = getattr(self._tfmw_wrapped_module, name)
    AttributeError: module 'tensorflow._api.v1.compat.v2' has no attribute '__internal__'

解决方法：

!pip3 uninstall keras-nightly
!pip3 uninstall -y tensorflow
!pip3 install keras==2.1.6
!pip3 install tensorflow==1.15.0
!pip3 install h5py==2.10.0