安装labelme时总是安装失败
pip install --upgrade labelme
依然还是龟速
老是因为网络原因
pip install PyQt5 --trusted-host http://pypi.tuna.tsinghua.edu.cn/simple
pip install --upgrade labelme --trusted-host http://pypi.tuna.tsinghua.edu.cn/simple
参考:https://blog.csdn.net/renJiQAQ/article/details/103819085