AttributeError：模块“ tensorflow._api.v2.train”没有属性“ AdamOptimizer”

Question

代码：

model.compile(optimiser=tf.train.AdamOptimizer(), loss='binary_crossentropy', metrics = ['accuracy'])

错误：

---

AttributeError               Traceback (most recent call last)
<ipython-input-95-bf5e47e2458a> in <module>
----> 1 model.compile(optimiser=tf.train.AdamOptimizer(), loss='binary_crossentropy', 
metrics = ['accuracy'])

AttributeError: module 'tensorflow._api.v2.train' has no attribute 'AdamOptimizer'

为什么此代码不起作用？