[Python handy notes] PIP domestic source installation and jupyter modification of default working path

pip Install third-party libraries from domestic sources

default pip install Is to use the official source for installation , Because it is abroad , Therefore, when downloading and installing, the installation will usually fail due to access timeout .
Some domestic mirror images ：
Alibaba cloud ： https://mirrors.aliyun.com/pypi/simple/
University of science and technology of China ： https://pypi.mirrors.ustc.edu.cn/simple/
douban (douban)： http://pypi.douban.com/simple/
Tsinghua University ： https://pypi.tuna.tsinghua.edu.cn/simple/
University of science and technology of China ： http://pypi.mirrors.ustc.edu.cn/simple/
For temporary use, you can use the following code ：

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple The third-party library you want to install

Permanent way ：
Under the user folder C:\User\xxx\ Create a new one pip Folder , Then create a new text , Enter the following code （Windows）：

[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple

Jupyter Modify the default working path

course ： Click the jump
The second method behind the personal test is effective