NameError: name 'tensorboard' is not defined，Tensorboard在windows里无法启动问题

From the error message, it looks like you are entering the command tensorboard at the Python shell. However, tensorboard is actually the name of a Windows executable program, and not a Python command. Therefore, you instead run TensorBoard by entering the same command at the "C:\>" Windows Command Prompt.

Tensorboard命令不在Python中运行，应该在Windows环境中运行

参考：

TensorBoard-可视化简单例子：http://blog.csdn.net/waterydd/article/details/70237219

NameError: name 'tensorboard' is not defined：https://stackoverflow.com/questions/42683097/launching-tensorboard-nameerror-name-tensorboard-is-not-defined