1. anaconda安装
官网下载Anaconda3-5.0.1-MacOSX-x86_64.pkg 点击安装
安装完成后，可以使用anaconda navigator,包括jupyter和spyder
2. pytorch安装
官网的点击是无响应的，根据提示使用终端，输入
conda install pytorch=0.2.0 -c soumith
询问是否确定安装并且对响应对包update，选择y，回车。
安装完毕，如下
Fetching package metadata .............
Solving package specifications: .
Package plan for installation in environment /Users/Anenyang/anaconda3:
The following NEW packages will be INSTALLED:
pytorch: 0.2.0-py36_4cu75 soumith
The following packages will be UPDATED:
anaconda: 5.0.1-py36h6e48e2d_1 --> custom-py36ha4fed55_0
conda: 4.3.30-py36h173c244_0 --> 4.4.8-py36_0
pycosat: 0.6.2-py36h1486600_0 --> 0.6.3-py36hee92d8f_0
Proceed ([y]/n)? y
anaconda-custo 100% |################################| Time: 0:00:00 1.38 MB/s
pycosat-0.6.3- 100% |################################| Time: 0:00:00 113.86 kB/s
pytorch-0.2.0- 100% |################################| Time: 0:00:29 172.88 kB/s
conda-4.4.8-py 100% |################################| Time: 0:00:32 29.42 kB/s
3. 问题
使用conda install pytorch=0.2.0 -c soumith这个命令只是安装torch(指定版本)，而没有torchvision
使用conda install pytorch torchvision -c soumith将会安装torch 和 torchvision
没有cuda就不指定其版本，且不需要指定python的版本，具体安装如下：
anenyangdeMacBook-Air:~ Anenyang$ conda install pytorch torchvision -c soumith
Solving environment: done
## Package Plan ##
environment location: /Users/Anenyang/anaconda3
added / updated specs:
- pytorch
- torchvision
The following packages will be downloaded:
package | build
---------------------------|-----------------
certifi-2018.1.18 | py36_0 143 KB
torchvision-0.1.9 | py36_1 86 KB soumith
openssl-1.0.2n | hdbc3d79_0 3.4 MB
------------------------------------------------------------
Total: 3.6 MB
The following NEW packages will be INSTALLED:
torchvision: 0.1.9-py36_1 soumith
The following packages will be UPDATED:
certifi: 2017.7.27.1-py36hd973bb6_0 --> 2018.1.18-py36_0
openssl: 1.0.2l-h57f3a61_2 --> 1.0.2n-hdbc3d79_0
Proceed ([y]/n)? y
Downloading and Extracting Packages
certifi 2018.1.18: ########################################################################################### | 100%
torchvision 0.1.9: ########################################################################################### | 100%
openssl 1.0.2n: ############################################################################################## | 100%
Preparing transaction: done
Verifying transaction: done
Executing transaction: done