opencv | cv2|OpenCV3.3安装，pip安装失败时使用命令python -m pip install -i https://pypi.tuna./simple opencv-python==3.3.0.10

DEPRECATION: The -b/–build/–build-dir/–build-directory option is deprecated. pip 20.3 will remove support for this functionality. A possible replacement is use the TMPDIR/TEMP/TMP environment variable, possibly combined with --no-clean. You can find discussion regarding this at /pypa/pip/issues/8333.

ERROR: Could not find a version that satisfies the requirement cv2 (from versions: none)

ERROR: No matching distribution found for cv2

Try to run this command from the system terminal. Make sure that you use the correct version of ‘pip’ installed for your Python interpreter located at ‘G:\soft\python\py368\python.exe’.