Cannot pip install in a Python 3.7 Docker container

[wangkuiyi]

I followed the README.rst to install Ray using pip in a container running the official Docker image of Python 3.7. Pip gave the following complaints:

US-183229-MP:work yi.w$ docker run --rm -it python:3.7 /bin/bash
root@90f8bd7e978b:/# pip install ray
Collecting ray
  Could not find a version that satisfies the requirement ray (from versions: )
No matching distribution found for ray

However, it works with Python 2.7:

US-183229-MP:work yi.w$ docker run --rm -it python:2.7 /bin/bash
root@0a46fa1e1789:/# pip install ray
Collecting ray
  Downloading https://files.pythonhosted.org/packages/f9/6b/7960fc5e526bdcb5d1ca576581716d4fe216a4d5bbc85a83fc537ed8a114/ray-0.5.2-cp27-cp27mu-manylinux1_x86_64.whl (57.8MB)
    52% |█████████████████               | 30.6MB 4.4MB/s eta 0:00:07

Is that Ray supports only Python 2.x?

[robertnishihara]

Thanks for reporting this. I'm closing this because we're tracking Python 3.7 support in #1115.

We currently support 2.7, 3.4, 3.5, and 3.6 (see https://pypi.org/project/ray/#files). You can also try building Ray from source with 3.7 or just using 3.6.