如pip文档中所述，用户可以使用来在其个人帐户中安装软件包pip install --user <pkg>。

如何以编程方式确定这样安装的脚本的用户安装位置？我说的是应该添加到PATH的目录，以便可以从命令行调用已安装的软件包。

例如，在Windows中，安装时pip install -U pylint --user会收到以下警告，因为'C:\Users\myusername\AppData\Roaming\Python\Python37\Scripts'我的PATH中没有：

...
Installing collected packages: wrapt, six, typed-ast, lazy-object-proxy, astroid, mccabe, isort, colorama, toml, pylint
  Running setup.py install for wrapt ... done
  WARNING: The script isort.exe is installed in 'C:\Users\myusername\AppData\Roaming\Python\Python37\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
  WARNING: The scripts epylint.exe, pylint.exe, pyreverse.exe and symilar.exe are installed in 'C:\Users\myusername\AppData\Roaming\Python\Python37\Scripts' which is not on PATH.

我是否可以使用一些python代码以编程方式确定该位置（将在Windows / Linux / Darwin / etc下运行）？就像是：

def get_user_install_scripts_dir():
    ...
    # would return 'C:\Users\myusername\AppData\Roaming\Python\Python37\Scripts'
    # on Windows with Python 3.7.x, '/home/myusername/.local/bin' in Linux, etc
    return platform_scripts_dir

作为备用，是否可以运行一些命令来获取此位置？类似于（但对于脚本位置，不是网站的基本目录）：

PS C:\Users\myusername\> python -m site --user-base
C:\Users\myusername\AppData\Roaming\Python

$ python -m site --user-base
/home/myusername/.local