解决：ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-base_which is required to install pyproject.toml-based

解决：ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-based projects

背景

在搭建环境，通过python安装opencv时，报错：
ERROR: Failed building wheel for opencv-python
Failed to build opencv-python
ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-based projects

报错问题

  Please check the install target is valid and see CMake's output for more information.
  ----------------------------------------
  ERROR: Failed building wheel for opencv-python
Failed to build opencv-python
ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-based projects

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截图如下：

报错翻译

主要报错信息内容翻译如下所示：

  Please check the install target is valid and see CMake's output for more information.
  ----------------------------------------
  ERROR: Failed building wheel for opencv-python
Failed to build opencv-python
ERROR: Could not build wheels for opencv-python, which is required to install pyproject.toml-based projects

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翻译：

请检查安装目标是否有效，并查看 CMake 的输出以获取更多信息。
  ----------------------------------------
  错误：opencv-python 的构建轮失败
无法构建 opencv-python
错误：无法为 opencv-python 构建轮子，这是安装基于 pyproject.toml 的项目所必需的

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报错原因

经过查阅资料，发现是版本兼容性问题。当使用pip install opencv-python命令安装的是最新版本，当前python版本不支持。需要安装当前版本python支持的opencv-python版本。

附：各版本Opencv的对应的各版本Python安装包:
https://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv

小伙伴们按下面的解决方法即可解决！！！

解决方法

要解决这个错误，需要安装当前版本python支持的opencv-python版本。如opencv-python==4.3.0.38。

命令如下：

pip install -i https://pypi.douban.com/simple/ pip install opencv-python==4.3.0.38
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截图如下：

附：

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