Jupyter 505

1.好久没用anaconda下的jupyter notebook 创建项目时候505了

2.重新安装jupyter（原来我是6.x.x版本）

3.然后报错：

UnavailableInvalidChannel: The channel is not accessible or is invalid.
  channel name: simple
  channel url: https://pypi.python.org/simple
  error code: 404

 解决方法： 

conda config --remove channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://repo.continuum.io/pkgs/free/ conda config --add channels https://repo.continuum.io/pkgs/main/ conda config --set show_channel_urls yes

 第一行remove一定要remove的是

conda config --show channels