ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out.

pip install open3d

错误：ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. 

解决办法：pip --default-timeout=500 install open3d -i https://pypi.tuna.tsinghua.edu.cn/simple