解决 pip is configured with locations that require TLS/SSL, however the ssl module in Python is not

PS C:\Users\ > pip install pip
Defaulting to user installation because normal site-packages is not writeable
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

#win10:Windows powershell

#2022/8/17

#users:fanch

这次准备用pip安装一下you-get这个包，出现上面报错：

报错内容一：
Defaulting to user installation because normal site-packages is not writeable

这里提示我们包无法正常读入，没有书写权限

报错内容二：

WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

这里提示我们缺少openssl模块

下面我们分别来解决这两个问题：

part1：

 首先进入  ‪E:\anaconda\Lib\site-packages 这个指定位置，修改用户的读写权限

-----------------------------（在这之前，还应当把这几条路径加入环境变量）----------------------------------

已添加则忽略该部分

 右击此电脑>高级系统设置>高级>环境变量>添加环境变量

———————————————————————————————————————————

修改了文件夹的读写权限之后，报错内容为 

part2：WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

PS C:\Users\fanch> pip install you-get
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/you-get/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/you-get/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/you-get/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/you-get/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/you-get/
Could not fetch URL https://pypi.org/simple/you-get/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/you-get/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
ERROR: Could not find a version that satisfies the requirement you-get (from versions: none)
ERROR: No matching distribution found for you-get

即缺少了SSL模块，进入 Win32/Win64 OpenSSL Installer for Windows - Shining Light Productionshttps://slproweb.com/products/Win32OpenSSL.html

选择 Win64 OpenSSL v1.1.1q Light 的 MSI进行下载点击安装即可

 这之后  you-get命令还是不能使用，一方面你需要返回第一步，改写相关的几个文件夹Lib和script的读写权限，另一方面需要删除 e:\anaconda\lib\site-packages下原有的安装文件

PS C:\Users\> pip install you-get
Requirement already satisfied: you-get in e:\anaconda\lib\site-packages (0.4.1620)
PS C:\Users\> you-get
you-get : The term 'you-get' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of t
he name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ you-get
+ ~~~~~~~
    + CategoryInfo          : ObjectNotFound: (you-get:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

然后重新运行pip install you-get 命令就可以正常使用了

PS C:\Users\> pip install you-get
Collecting you-get
  Using cached you_get-0.4.1620-py3-none-any.whl (230 kB)
Installing collected packages: you-get
Successfully installed you-get-0.4.1620


PS C:\Users\> you-get.exe
usage: you-get [OPTION]... URL...

A tiny downloader that scrapes the web

optional arguments:
  -V, --version         Print version and exit
  -h, --help            Print this help message and exit

......