更改pip源/anaconda源：windows与linux

[global]  
index-url=http://mirrors.aliyun.com/pypi/simple
[install]  
trusted-host=mirrors.aliyun.com  
disable-pip-version-check = true  
timeout = 6000  

cd $HOME  
mkdir .pip  
cd .pip
sudo vim pip.conf  

在里面添加  
[global]  
index-url = https://pypi.doubanio.com/simple/  
[install]  
trusted-host=pypi.doubanio.com  
disable-pip-version-check = true  
timeout = 6000  
保存即可  

conda config --add channels 'https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/'
conda config --set show_channel_urls yes
#好了，这次可以开心的下载东西了