anaconda3 -- conda使用

一、运行命令报错
创建环境

conda create --name article_spider python=3.6

更新conda

conda update conda

运行上述两个命令时都报错

Fetching package metadata .......
CondaHTTPError: HTTP 000 CONNECTION FAILED for url 
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.
ConnectionError(MaxRetryError("HTTPSConnectionPool(host='repo.continuum.io', port=443): Max retries exceeded with url: /pkgs/main/osx-64/repodata.json.bz2 (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 65] No route to host',))",),)

解决方法
参考 ：http://blog.csdn.net/ada0915/article/details/78529877

清华大学开源软件镜像站 - anaconda镜像

#首先先添加清华的镜像源
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --set show_channel_urls yes

#如果无法解决，则删除channels配置文件中部分内容

#具体操作如下:
#1、快速创建channels配置文件的备份(保险起见)
cp ~/.condarc{,.bak}

#查看配置文件的内容
cat ~/.condarc.bak 
channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
  - defaults
show_channel_urls: true

#2、删除部分内容
#修改后配置文件的内容如下，只保留清华的镜像源：
vim ~/.condarc
channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
show_channel_urls: true

二、conda 文档
https://conda.io/docs/index.html

三、conda 简单实用

# To see a list of all your environments
conda info --envs

#To use, or “activate” the new environment, type the following
#Windows: 
activate snowflakes
#Linux and macOS:
source activate snowflakes

#Change your current environment back to the default (base):
#Windows: 
deactivate
#Linux, macOS: 
source deactivate