【一些关于服务器配置的笔记】

• 镜像源慢
• cv2

服务器镜像源已经修改过但是pip很慢，因为pip时候使用的不一定是服务器已经配置好的，可以指定镜像源

-i https://pypi.tuna.tsinghua.edu.cn/simple
如: pip install csv -i https://pypi.tuna.tsinghua.edu.cn/simple

cv2是OpenCV2，直接pip会报错
所以 pip install opencv-python

如果在import cv2出现：

Traceback (most recent call last):
  File "/root/mr/pkl.py", line 10, in 
    import cv2
  File "/root/anaconda3/envs/pyssr/lib/python3.7/site-packages/cv2/__init__.py", line 8, in 
    from .cv2 import *
ImportError: libGL.so.1: cannot open shared object file: No such file or directory

可以使用

pip install opencv-python-headless

慢的话指定镜像源：

pip install opencv-python-headless -i https://pypi.tuna.tsinghua.edu.cn/simple

Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting opencv-python-headless
  Downloading https://pypi.tuna.tsinghua.edu.cn/packages/bf/3e/9dee09e56d42a0c01d7898ceaa6ed4a8fe2763c10d7bded91ef6362e6537/opencv_python_headless-4.5.5.64-cp36-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (47.8 MB)
     |████████████████████████████████| 47.8 MB 51 kB/s 
Requirement already satisfied: numpy>=1.14.5 in ./anaconda3/envs/pyssr/lib/python3.7/site-packages (from opencv-python-headless) (1.21.6)
Installing collected packages: opencv-python-headless
Successfully installed opencv-python-headless-4.5.5.64