ImportError: Failed to import `pydot`. Please install `pydot`. For example with `pip install pydot`

keras可视化网络结构报错ImportError: Failed to import `pydot`. Please install `pydot`. For example with `pip install pydot`

解决方案：

安装如上三个package，使用pip install 即可

1. pydot
2. pydotplus
3. graphviz