This is a plugin for the Palantir's Python Language Server (https://github.com/palantir/python-language-server)
It, like mypy, requires Python 3.6 or newer.
Install into the same virtualenv as pyls itself.
pip install mypy-ls
live_mode (default is True) provides type checking as you type. This writes to a tempfile every time a check is done.
Turning off live_mode means you must save your changes for mypy diagnostics to update correctly.
Depending on your editor, the configuration (found in a file called mypy-ls.cfg in your workspace or a parent directory) should be roughly like this:
{
"enabled": True,
"live_mode": True,
"strict": False
}