Can't install pytorch with pip on Windows

Question

I'm trying to install Pytorch with Windows and I'm using the commands of the official site https://pytorch.org/get-started/locally/

pip3 install torch==1.2.0 torchvision==0.4.0 -f https://download.pytorch.org/whl/torch_stable.html 

This is the command if I choose Windows, Cuda 10.0, and Python 3.7 But if I run this I get the error message:

ERROR: Could not find a version that satisfies the requirement torch==1.2.0 (from versions: 0.1.2, 0.1.2.post1, 0.1.2.post2) ERROR: No matching distribution found for torch==1.2.0 

So why does this happen? My pip is version 19.2 and I am in a newly installed python 3.7 environment

Answer 1

I tried multiple solutions and it wasn't working on Windows 10 until I tried this:

pip install torch==1.5.0+cpu -f https://download.pytorch.org/whl/torch_stable.html 

If you want your GPU enabled then remove the "+CPU":

pip install torch==1.5.0 -f https://download.pytorch.org/whl/torch_stable.html 

Answer 2

The most likely reason for Your issue is a 32-bit installation of python, while the torch libraries rely on having a 64-bit version. I had exactly the same issue.

Just start python from command line and observe

C:\Users\marci>python Python 3.7.4 (tags/v3.7.4:e09359112e, Jul  8 2019, 20:34:20) [MSC v.1916 64 bit (AMD64)] on win32 

My installation now shows 64 bits. If Yours shows 32, then install 64-bit python. I used this link: Official python 64-bit Windows installer