我曾尝试为 Windows 安装 Python3.7。之后我尝试安装 numpy 等软件包,一切正常。但是,当我尝试安装 matplotlib 时,发现以下错误:
* The following required packages can not be built:
* freetype, png
* Please check http://gnuwin32.sourceforge.net/packa
* ges/freetype.htm for instructions to install
* freetype
* Please check http://gnuwin32.sourceforge.net/packa
* ges/libpng.htm for instructions to install png
然后当我尝试安装 opencv-python 时,出现以下错误:
Could not find a version that satisfies the requirement opencv-python (from versions: )
No matching distribution found for opencv-python
我该如何解决这些问题?