Can't install the prerequisites

pip install ray[rllib]==0.8.4
ERROR: Could not find a version that satisfies the requirement ray[rllib]==0.8.4 (from versions: none)
ERROR: No matching distribution found for ray[rllib]==0.8.4

I am trying this on Windows 10

What version of python are you using? It doesn’t mention it anywhere but python 3.7 is the latest working version with the given requirements.

i have python 3.7.1

Are you sure it’s because of the python version?

Is there a separate guide for windows 10 setup? Was following the one on github.

It says Windows 10 is supported so thats the only thing I can think of. Pip could be trying to install to a different python. See if this works.

python3.7 -m pip install ray[rllib]==0.8.4

Something else to note is that the requirements.txt uses v0.8.5 instead of v0.8.4 so try both?

Also make sure you have a valid python and have an up to date pip using:

# run these commands to check for the correct python version
python -c "import sys; assert (3,6,0) <= sys.version_info <= (3,9,0), 'python is incorrect version'; print('ok')"
python -c "import platform; assert platform.architecture()[0] == '64bit', 'python is not 64-bit'; print('ok')"
pip install --upgrade pip