python 安装包的默认路径与更改

python 安装包的默认路径与更改

每次总是用pip去安装包,但是有的时候电脑里有多个python安装包,不知道安装包安装在了哪里：

1. 安装包命令如下: pip install numpy；

   2.如何查看安装包的位置

   python -m site ；

   3.显示出来的结果如下:

C:\Users\siyaopeng>python -m site

sys.path = [

‘C:\Users\siyaopeng’,

‘E:\Python\python38.zip’,

‘E:\Python\DLLs’,

‘E:\Python\lib’,

‘E:\Python’,

‘E:\Python\lib\site-packages’,

]

USER_BASE: ‘C:\Users\siyaopeng\AppData\Roaming\Python’ (doesn’t exist)

USER_SITE: ‘C:\Users\siyaopeng\AppData\Roaming\Python\Python38\site-packages’ (doesn’t exist)

ENABLE_USER_SITE: True

user_site其实就是个人的site-packages默认安装路径了

4.下面就是到对应的文件夹去修改配置

5.cmd命令行窗口下键入：

python -m site -help

6.可以看到结果:

C:\Users\siyaopeng>python -m site -help

E:\Python\lib\site.py [–user-base] [–user-site]

Without arguments print some useful information

With arguments print the value of USER_BASE and/or USER_SITE separated

by ‘;’.

Exit codes with –user-base or –user-site:

0 - user site directory is enabled

1 - user site directory is disabled by user

2 - uses site directory is disabled by super user

or for security reasons

7.可以看出是E:\Python\lib\site.py来管理这些配置

8.进入这个文件中,修改USER_BASE和USER_SITE

9.USER_BASE:执行下载的pip等脚本路径是由USER_BASE决定

USER_SITE:要安装下载的site-packages的路径

10.如何检查是否已修改成功:

命令行pip已安装的包,显示请求已满足

C:\Users\siyaopeng>pip install numpy

Requirement already satisfied: numpy in e:\python\lib\site-packages (1.19.4)