pip, conda switch source installation, significantly improve the speed! ! !
The first method (for pip)
temporary method
When using pip install xxx, use the following command:
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple xxx
Among them, xxx is the name of the package you want to install.
permanent method
Under Windows, first open the command terminal and enter set to find the path of this folder. 
Then directly create a pip directory in this directory, such as: C:\Users\Administartor\pip, and create a new file pip.ini with the following content
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
[install]
trusted-host=pypi.tuna.tsinghua.edu.cn
Under Linux,
create a .pip file in the user's root directory. For example, if my user name is hh, then create it under hh/. Note that there is a dot in front of it, then enter the folder, create the pip.conf file, open it and enter the following Content, the source inside can be changed at will. Alibaba Cloud and Douban are used here.
[global]
timeout = 10
index-url = http://mirrors.aliyun.com/pypi/simple/
extra-index-url= http://pypi.douban.com/simple/
[install]
trusted-host=
mirrors.aliyun.com
pypi.douban.com
Second method (for conda)
Enter the following three commands, one by one! ! !
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
After the input is completed, you can happily perform conda install xxx. I hope it is useful to everyone.