我从https://pypi.org/simple/dlib/网站下载了 dlib-19.19.0.tar.gz 文件。我尝试使用How to install Python packages from the tar.gz 文件进行安装，而不使用 pip install这些方法。但没有一个对我有用。这是我的蟒蛇信息：
(base) C:\Users\Krishna Rohith>conda info
active environment : base
active env location : C:\Users\Krishna Rohith\Anaconda3
shell level : 1
user config file : C:\Users\Krishna Rohith\.condarc
populated config files : C:\Users\Krishna Rohith\.condarc
conda version : 4.8.0
conda-build version : 3.18.11
python version : 3.6.9.final.0
virtual packages : __cuda=10.1
base environment : C:\Users\Krishna Rohith\Anaconda3 (writable)
channel URLs : https://repo.anaconda.com/pkgs/main/win-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/win-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/msys2/win-64
https://repo.anaconda.com/pkgs/msys2/noarch
package cache …