Python 无法从Google Colab中的keras导入到_Category

所以我一直在谷歌Colab上做一个笔记本，突然我发现了以下错误

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-bd6ec74ccf2e> in <module>()
----> 1 from keras.utils import to_categorical

ImportError: cannot import name 'to_categorical' from 'keras.utils' (/usr/local/lib/python3.7/dist-packages/keras/utils/__init__.py)

---------------------------------------------------------------------------
NOTE: If your import is failing due to a missing package, you can
manually install dependencies using either !pip or !apt.

To view examples of installing some common dependencies, click the
"Open Examples" button below.

我想知道是否有什么变化，是否还有其他人经历过同样的问题。

---

谢谢。

从TF2.0开始，它已经用tensorflow移动了。请用这种方式：

from tensorflow.keras.utils import to_categorical
to_categorical([0, 1, 2, 3], num_classes=4)

结果会是这样的

array([[1., 0., 0., 0.],
       [0., 1., 0., 0.],
       [0., 0., 1., 0.],
       [0., 0., 0., 1.]], dtype=float32)

从代码中删除这一行并使用

from tensorflow.keras.utils import to_categorical

这会解决你的问题

import tensorflow as tf

y_train_one_hot = tf.keras.utils.to_categorical(y_train)

from keras.utils import to_categorical

from tensorflow.keras.utils import to_categorical