Conda 安装Pytorch

1、conda 切换虚拟环境

activate 虚拟环境名称

C:\Windows\System32>activate python310

温馨提示：查询虚拟环境列表

conda env list

C:\Windows\System32>conda env list
# conda environments:
#
base                     D:\anaconda3
python310                D:\anaconda3\envs\python310

2、conda 查看安装源

conda config --show-sources

我本地安装源为:清华大学开源软件镜像源

修改conda 默认安装源，请执行如下指令:

# 安装清华安装源
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
 
# 移除conda 默认安装源
conda config --remove channels defaults

3、conda 查看PyTorch版本

conda search pytorch

(python310) C:\Windows\System32>conda search pytorch
Loading channels: done
# Name                       Version           Build  Channel
pytorch                        1.0.1 cpu_py36h39a92a0_0  pkgs/main
pytorch                        1.0.1 cpu_py37h39a92a0_0  pkgs/main
pytorch                        1.3.1 cpu_py36h9f948e0_0  pkgs/main
pytorch                        1.3.1 cpu_py37h9f948e0_0  pkgs/main
pytorch                        1.4.0 cpu_py36ha775e86_0  pkgs/main
pytorch                        1.4.0 cpu_py37ha775e86_0  pkgs/main
pytorch                        1.4.0 cpu_py38ha775e86_0  pkgs/main
pytorch                        1.5.0 cpu_py37h9f948e0_0  pkgs/main
pytorch                        1.6.0 cpu_py37h538a6d7_0  pkgs/main
pytorch                        1.6.0 cpu_py38h538a6d7_0  pkgs/main
pytorch                       1.10.2 cpu_py310habb1308_0  pkgs/main
pytorch                       1.10.2 cpu_py37h907fbb5_0  pkgs/main
pytorch                       1.10.2 cpu_py38h907fbb5_0  pkgs/main
pytorch                       1.10.2 cpu_py39h907fbb5_0  pkgs/main
pytorch                       1.12.1 cpu_py310h5e1f01c_0  pkgs/main
pytorch                       1.12.1 cpu_py310h5e1f01c_1  pkgs/main
pytorch                       1.12.1 cpu_py37h5e1f01c_0  pkgs/main
pytorch                       1.12.1 cpu_py37h5e1f01c_1  pkgs/main
pytorch                       1.12.1 cpu_py38h5e1f01c_0  pkgs/main
pytorch                       1.12.1 cpu_py38h5e1f01c_1  pkgs/main
pytorch                       1.12.1 cpu_py39h5e1f01c_0  pkgs/main
pytorch                       1.12.1 cpu_py39h5e1f01c_1  pkgs/main

4、安装PyTorch

根据自己的安装版本，在Pytorch官网寻找安装命令代码：
（1）Pytorch官网：PyTorch

 如图所示版本将相关指令复制：

conda install pytorch torchvision torchaudio cpuonly -c pytorch

（2）将复制的代码粘贴到命令行格式下，弹出提示，输入 y，即可完成安装，显示“done”。

(python310) C:\Windows\System32>conda install pytorch torchvision torchaudio cpuonly -c pytorch
Retrieving notices: ...working... done
Collecting package metadata (current_repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: D:\anaconda3\envs\python310

  added / updated specs:
    - cpuonly
    - pytorch
    - torchaudio
    - torchvision


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    certifi-2023.5.7           |  py310haa95532_0         153 KB  defaults
    cpuonly-2.0                |                0           2 KB  pytorch
    pytorch-2.0.1              |     py3.10_cpu_0       145.5 MB  pytorch
    pytorch-mutex-1.0          |              cpu           3 KB  pytorch
    torchaudio-2.0.2           |        py310_cpu         5.4 MB  pytorch
    torchvision-0.15.2         |        py310_cpu         6.5 MB  pytorch
    ------------------------------------------------------------
                                           Total:       157.6 MB

The following NEW packages will be INSTALLED:

  cpuonly            pytorch/noarch::cpuonly-2.0-0
  filelock           pkgs/main/win-64::filelock-3.9.0-py310haa95532_0
  jinja2             pkgs/main/win-64::jinja2-3.1.2-py310haa95532_0
  libuv              pkgs/main/win-64::libuv-1.44.2-h2bbff1b_0
  markupsafe         pkgs/main/win-64::markupsafe-2.1.1-py310h2bbff1b_0
  mpmath             pkgs/main/win-64::mpmath-1.2.1-py310haa95532_0
  networkx           pkgs/main/win-64::networkx-2.8.4-py310haa95532_1
  pytorch            pytorch/win-64::pytorch-2.0.1-py3.10_cpu_0
  pytorch-mutex      pytorch/noarch::pytorch-mutex-1.0-cpu
  sympy              pkgs/main/win-64::sympy-1.11.1-py310haa95532_0
  torchaudio         pytorch/win-64::torchaudio-2.0.2-py310_cpu
  torchvision        pytorch/win-64::torchvision-0.15.2-py310_cpu
  typing_extensions  pkgs/main/win-64::typing_extensions-4.5.0-py310haa95532_0

The following packages will be UPDATED:

  certifi                         2022.12.7-py310haa95532_0 --> 2023.5.7-py310haa95532_0


Proceed ([y]/n)? y


Downloading and Extracting Packages

Preparing transaction: done
Verifying transaction: done
Executing transaction: done

（3）pytorch 模块验证

1.进入python：python

2.测试pytorch：import torch

(python310) C:\Windows\System32>python
Python 3.10.10 | packaged by Anaconda, Inc. | (main, Mar 21 2023, 18:39:17) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import torch
>>>