PyTorch深度学习入门笔记（一）PyTorch环境配置及安装

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" P5 [; c2 P8 \( v0 o$ f7 m<p>@</p><p></p>
- Y7 S& b: S+ R2 k) g+ ?, o# `<p><strong>OS：</strong> ubuntu 20.04（虚拟机）</p>
1 R7 b" U! M! N: e+ g2 ~  G<h1 id="一工具安装">一、工具安装</h1>
8 @0 O6 O; l5 I7 M<h2 id="11-anaconda-安装">1.1 Anaconda 安装</h2>
9 B4 O' P7 S+ Z; A" }/ A; B<p>首先安装Anaconda ,我是去<a  href="https://mirrors.tuna.tsinghua.edu.cn/anaconda/archive/">清华大学镜像站</a>下载，版本为<br>
<code>Anaconda3-5.2.0-Linux-x86_64.sh</code><br>
& V1 ?) V; ]5 Q* i0 p$ g( n+ b参考<a  href="https://blog.csdn.net/m0_50117360/article/details/108403586?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522164187185416780357286476%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=164187185416780357286476&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-108403586.pc_search_insert_ulrmf&utm_term=ubuntu20.04%E5%AE%89%E8%A3%85anaconda&spm=1018.2226.3001.4187">这篇CSDN博客</a>安装好。<br>
安装成功测试：<br>
4 {& E! U3 F% p, @<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102427806-11701860.png" ><br>
首先创建一个虚拟环境：</p>
& Q+ X1 i2 y/ q, _6 P$ `<pre><code class="language-c">conda create -n pytorch python=3.6
</code></pre>
5 W+ {; h+ V4 Q, I& _3 @<p><img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102428555-1044758357.png" ><br>
输入</p>
) {* {0 u: A. X% L4 p( j$ W& U<pre><code class="language-c">source activate pytorch
+ b4 Z% i; Q/ ^) O2 x/ J, b( V</code></pre>
<p>激活环境</p>
  L# V6 O6 P4 C$ F1 A+ [<h2 id="12-pytorch安装">1.2 Pytorch安装</h2>
5 {& D& q( z' ~2 v- o- a<p>进入<a  href="https://pytorch.org/get-started/locally/">官网</a>,选择合适版本安装，因为我是用的ubuntu20.04虚拟机，不支持CUDA，所以选择了CPU：<br>
9 j0 F7 }/ Z9 p/ S: j# X<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102429086-588112728.png" ></p>
<p>选择合适版本并复制Run this Command:即可进行安装(不推荐使用方法，因为下载速度很慢)。<br>
( N4 ^! f) t4 t% c安装过程可能比较缓慢，可以用以下命令（推荐）‘</p>
4 t: B1 h2 V- k* t<pre><code class="language-c">pip3 --default-timeout=1000 install --index-url https://mirrors.aliyun.com/pypi/simple torch==1.10.1+cpu torchvision==0.11.2+cpu torchaudio==0.10.1+cpu -f https://download.pytorch.org/whl/cpu/torch_stable.html
8 X. [; j  x8 e9 y$ G) o* ?</code></pre>
4 x; y, F8 H, T<p>注意：先进入所创建的 Pytorch虚拟环境，再输入指令进行安装。<br>
/ |2 H7 V# p& d# a3 \<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102429678-1764231985.png" ><br>
! \' p8 F. F" w& m9 d安装好后进行测试：<br>
<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102430213-1770020069.png" ></p>
<h1 id="二编辑器安装">二、编辑器安装</h1>
<h2 id="21-pycharm安装">2.1 Pycharm安装</h2>
* L( @# D, L6 s! i6 }<p>官方下载地址是：<a  href="https://www.jetbrains.com/pycharm/download/#section=linux">https://www.jetbrains.com/pycharm/download/#section=linux</a><br>
( J. S/ T, }8 p2 j2 W选择免费的社区版安装：<br>
<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102431391-2074783399.png" ><br>
下载下来就是解压，放到一个合适的文件夹下，然后添加环境变量</p>
<pre><code class="language-bash">gedit .bashrc
" K" `; p* t  t# |4 J8 S3 I, s</code></pre>
& F- }# f2 s" H3 N7 q<p>在最下面一行输入：</p>
: o$ v8 A, ]* {$ N( F<pre><code class="language-c"># pycharm
alias pycharm="sh /home/jc-cao/app_download_address/Pycharm2021/pycharm-community-2021.3.1/bin/pycharm.sh"
</code></pre>
<p>注：将上面的路径改为自己的pycharm安装路径即可<br>
) s' h3 X. N7 A) |4 D& h* z然后使配置生效</p>
<pre><code class="language-c">source .bashrc
7 K; Y* [+ q1 l- g8 h- T</code></pre>
<p>这样在终端输入 <code>pycharm</code> 就能打开软件了<br>
<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102432003-1803611031.png" ><br>
接下来创建一个名为 learn_pytorch的工程：<br>
<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102433439-420704314.png" ><br>
/ Q6 f* Y0 \3 C+ x选择解释器为之前所创建的名为pytorch的虚拟环境的python解释器</p>
* \- l/ o# K& o2 I<h2 id="22-jupyter安装">2.2 Jupyter安装</h2>
# A0 Q# i  K6 z' h$ |% i<p>在pytorch 虚拟环境中，输入</p>
- J5 y- k) i2 T3 N/ z8 V8 t/ J/ E<pre><code class="language-c">conda install nb_conda
( q* a- X+ j4 z& E</code></pre>
<p>安装jupyter：<br>
: \+ l; J/ m2 P+ d3 U4 d<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102433994-347380977.png" ><br>
, f6 l" ^( j% c6 y  X# m# }" G0 Y安装好后输入 <code>jupyter notebook</code> 测试<br>
( W2 F; a9 G4 P* H: d8 N<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102434545-226958772.png" ><br>
: G/ w+ G# G' p: `5 e在jupyter中新建一个notebook，采用pytorch虚拟环境的python解释器，即可导入torch包进行使用了。<br>
& J) a( t) E+ F; H1 m$ M<img src="https://img2022.cnblogs.com/other/1772025/202202/1772025-20220212102434869-1058987249.png" ></p>
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