A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.
Separate names with a comma.
It looked like an omission in the system requirements, so I naively installed the package on Linux and cried my eyes out: 'The Python for Unity...
@GregoryFenn & other Linuxians: ~/.local/share/unity3d/Asset Store-5.x/