Anaconda creates a virtual environment and installs pytorch

1. install Anaconda
   Official website Download and install
2. Creating a virtual environment
   open Anaconda Prompt（ Start menu ）
   Creating a virtual environment , The environment name is pytorch（ Can start at will ）

（1） Create an environment pytorch, Use Python The version is 3.7.
conda create -n pytorch python=3.7
after , Pop up the prompt , Input y, You can install .
（2） Check whether the environment is installed successfully
conda info --envs
You can see base and pytorch Two environments
（3） Activate the virtual environment pytorch：activate pytorch

3. install pytorch
   https://pytorch.org/get-started/locally/
   
   （1） Enter the installation command
   conda install pytorch torchvision torchaudio cudatoolkit=10.2 -c pytorch
   （2） Paste the copied code into the command line format , Pop up the prompt , Input y, To complete the installation , Show “done”.

Get into python：python
test numpy：import numpy
test pytorch：import torch

If all the above steps are OK , Then the installation is successful .