[Q&A]使用visdom时出现“ConnectionRefusedError: [WinError 10061] 由于目标计算机积极拒绝，无法连接”问题

Setting up a new session...
Exception in user code:
------------------------------------------------------------
Traceback (most recent call last):
  File "D:AnacondaenvsdeeplearningDay100libsite-packagesurllib3connection.py", line 174, in _new_conn
    conn = connection.create_connection(
  File "D:AnacondaenvsdeeplearningDay100libsite-packagesurllib3utilconnection.py", line 95, in create_connection
    raise err
  File "D:AnacondaenvsdeeplearningDay100libsite-packagesurllib3utilconnection.py", line 85, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [WinError 10061] 由于目标计算机积极拒绝，无法连接。

During handling of the above exception, another exception occurred:

出现该现象的原因是在线可视化工具visdom启动失败。
已安装visdom条件下，解决方法是激活visdom服务器。
在当前python环境下输入：

python -m visdom.server

Checking for scripts.
Downloading scripts, this may take a little while
It's Alive!
INFO:root:Application Started
You can navigate to http://localhost:8097
INFO:tornado.access:200 GET / (::1) 47.00ms

之后可以访问visdom默认端口8097了。