Detailed explanation of Python switching PIP image source (installation source)

Preface ：

I'm learning python When , use pip Download some libraries , Sometimes very slow , It was on the verge of collapse . Because the default pip It's using Python Official source , But because foreign official sources are often blocked , Make it unusable , We can use domestic Python Mirror source , So as to solve Python The trouble of not installing the library .

Common domestic image sources

 http://pypi.douban.com/simple/ douban
http://mirrors.aliyun.com/pypi/simple/ Ali
http://pypi.hustunique.com/simple/ Huazhong University of technology
http://pypi.sdutlinux.org/simple/ Shandong University of technology
http://pypi.mirrors.ustc.edu.cn/simple/ University of science and technology of China

Method 1 ：Windows Replace the image source permanently

1. stay windows Enter... In the file manager “ %APPDATA% ”, As shown in the figure below ：
   
2. It will be located in a new directory (“C:\Users\Administrator\AppData\Roaming\pip\pip.ini”),Administrator For your user name , Create a new pip Folder , Then create a new one in the matching folder pip.ini file , As shown in the figure below ：
   
3. In the new pip.ini Enter the following in the file , Then save .
   Be careful :" index-url " The content of is the path of the image source , Replaceable

   [global]
   timeout = 6000
   index-url = http://pypi.douban.com/simple
   trusted-host = pypi.douban.com
   

   Here's the picture ：
   

Method 2 ：LInux Replace the image source permanently

1. Need modification ~/ .pip/pip.conf ( Create a )

   cd ~
   mkdir -p .pip
   nano pip.conf # perhaps vi pip.con
   

   
2. stay pip.conf In profile , Add configuration content , Just modify Li's default software source , The configuration is as follows ：

   [global]
   timeout = 6000
   index-url = http://pypi.douban.com/simple
   trusted-host = pypi.douban.com
   

   

Method 3 ： Temporarily install from the image source

pip Use when installing files : pip install < Package name > –trusted-host pypi.douban.com

such as : pip install pyquery –trusted-host pypi.douban.com

1. To install django For example ：

   pip install -i https://pypi.doubanio.com/simple/ Django
   pip install -i https://pypi.doubanio.com/simple/ --trusted-host pypi.doubanio.com Djang
   

   notes :

   -i https://pypi.doubanio.com/simple/ ------ Indicates the use of watercress （-i == --index-url）
   --trusted-host pypi.doubanio.com -------- Indicates adding trust
   

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