python2.7安装opencv-python很慢且总是失败

当直接使用pip安装opencv-python时,且总是报错,找了好久,发现是因为因为新版的opencv不再支持python2.7,解决办法为指定opencv版本

pip install opencv-python==4.2.0.32

最后终于安装成功

参考:
https://blog.csdn.net/weixin_44737922/article/details/109785726