运行dcnv3代码的警告及解决方法_attempted to use ninja as the buildextension backe

UserWarning:Attempted to use ninja as the BuildExtension backend but we could not find ninja
解决方法：pip install ninja

SetuptoolsDeprecationWarning: setup.py install is deprecated.Use build and pip and other standards-based tools. setuptools.SetuptoolsDeprecationWarning.
解决：降到58.2.0
pip uninstall setuptools
pip install setuptools==58.2.0

运行python setup.py build install报错：
running bdist_egg
running egg_info
error: [Errno 13] Permission denied
原因是权限不够，解决方法：
sudo python setup.py build install
如果不行的话，在终端运行which python，得到python的路径后，运行
sudo /home/zyp/anaconda3/envs/pytorch_cp37/bin/python setup.py build install