conda
conda info --env
conda activate pytorch
conda remove -n your_env_name --all
conda create --name tensorflow python=3.8
conda create -name your_env_name python=version_no anaconda ##(如果末尾不添加anaconda命令，则该虚拟环境只有python，没有其他包)
conda search tensorflow-gpu
conda list
pip
pip freeze > requirements.txt
pip install opencv-python (cv2)
pip install tensorflow==2.6.0
tensorboard
使用绝对路径： tensorboard --logdir=D:PythonpytorchLearnlearnlogs
!tensorboard --logdir=train-logs
!tensorboard --logdir /home/train-logs --port 6006 --bind_all
