pip install -U scikit-image -i https://pypi.tuna.tsinghua.edu.cn/simple/
清華
https://pypi.tuna.tsinghua.edu.cn/simple/
阿里源
pip install -r scikit-image -i https://mirrors.aliyun.com/pypi/simple/
豆瓣
pip install -r scikit-image -i https://pypi.douban.com/simple/
提示:ImportError: 'No module named skimage.io'
sudo apt install python-skimage
提示:ImportError: No module named google.protobuf.internal
sudo apt-get install python-protobuf