In general, don't do this: pip install package. because, as you have correctly noticed, it's not clear what Python version you're installing ... ... <看更多>

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 ... ... <看更多>

The output of pip --version tells you which version of pip is currently installed, and which version of Python it's set up to install packages for. ... <看更多>