vim/.vim/ftplugin/python/lsp.vim

   1 if executable("pyls")
   2     " pip install 'python-language-server[all]'
   3     au User lsp_setup call lsp#register_server({
   4     \    "name": "pyls",
   5     \    "cmd": {server_info->["pyls"]},
   6     \    "allowlist": ["python"],
   7     \    "workspace_config": {"pyls": {
   8     \        "configurationSources": ["flake8"],
   9     \    }},
  10     \})
  11 endif