属性错误：模块'；tensorflow'；没有属性'；获取默认图形'；

给出以下输出

import tensorflow as tf
from keras.models import Sequential
from keras.layers import Dense

model = Sequential([    Dense(32, activation='relu', input_shape=(5038,)),    Dense(32, activation='relu'),    Dense(881, activation='sigmoid'),])
model.compile(optimizer='sgd', loss='binary_crossentropy', metrics=['accuracy'])
hist = model.fit(X_train, Y_train,          batch_size=32, epochs=100,          validation_data=(X_val, Y_val))

---

为什么会出现此错误？

看起来您正在使用TensorFlow 2.0（或更新版本）。TensorFlow>=2.0在

tf.Keras

下提供了对Keras的全面内置支持。如上所述，TensorFlow用户应使用

tf.keras

而不是keras模块

可以使用

tf.keras

以以下方式重写您的特定示例：

AttributeError                            Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/keras/backend/tensorflow_backend.py in _get_default_graph()
     65     try:
---> 66         return tf.get_default_graph()
     67     except AttributeError:

AttributeError: module 'tensorflow' has no attribute 'get_default_graph'

During handling of the above exception, another exception occurred:

RuntimeError                              Traceback (most recent call last)
5 frames
/usr/local/lib/python3.6/dist-packages/keras/backend/tensorflow_backend.py in _get_default_graph()
     67     except AttributeError:
     68         raise RuntimeError(
---> 69             'It looks like you are trying to use '
     70             'a version of multi-backend Keras that '
     71             'does not support TensorFlow 2.0. We recommend '

RuntimeError: It looks like you are trying to use a version of multi-backend Keras that does not support TensorFlow 2.0. We recommend using `tf.keras`, or alternatively, downgrading to TensorFlow 1.14.

---

有关更多信息，请参见此处的tf.keras教程：

看起来您正在使用TensorFlow 2.0（或更新版本）。TensorFlow>=2.0在

tf.Keras

下提供了对Keras的全面内置支持。如上所述，TensorFlow用户应使用

tf.keras

而不是keras模块

可以使用

tf.keras

以以下方式重写您的特定示例：

AttributeError                            Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/keras/backend/tensorflow_backend.py in _get_default_graph()
     65     try:
---> 66         return tf.get_default_graph()
     67     except AttributeError:

AttributeError: module 'tensorflow' has no attribute 'get_default_graph'

During handling of the above exception, another exception occurred:

RuntimeError                              Traceback (most recent call last)
5 frames
/usr/local/lib/python3.6/dist-packages/keras/backend/tensorflow_backend.py in _get_default_graph()
     67     except AttributeError:
     68         raise RuntimeError(
---> 69             'It looks like you are trying to use '
     70             'a version of multi-backend Keras that '
     71             'does not support TensorFlow 2.0. We recommend '

RuntimeError: It looks like you are trying to use a version of multi-backend Keras that does not support TensorFlow 2.0. We recommend using `tf.keras`, or alternatively, downgrading to TensorFlow 1.14.

有关更多信息，请参见此处的tf.keras教程：