Visual studio code for python highlighting not working. Why?

Question

Python

Installed visual code studio. Installed the python extension. Installed packages pip3 install -U --user pylint pep8 flake8
But error highlighting doesn't work. Although everything is displayed in Pycharm. What is the problem?
Settings file

{
    "editor.fontSize": 15,
    "editor.cursorBlinking": "phase",
    "editor.renderWhitespace": "boundary",
    "window.openFilesInNewWindow": "on",
    "editor.fontFamily": "Liberation Mono",
    "editor.fontWeight": "normal",
    "editor.lineHeight": 0,
    "files.autoSave": "afterDelay",
    "editor.tabCompletion": true,
    "python.pythonPath": "!/usr/local/bin/python3.5",
    "python.formatting.formatOnSave": true,
    "code-runner.executorMap": {
        "python": "python3"
    },
    "workbench.colorTheme": "Darcula",
    "python.linting.enabled": true,
    "python.linting.lintOnSave": false,
    "python.linting.pylintEnabled": true,
    "python.linting.pylintPath": "/usr/local/bin/pylint",
    "python.linting.pylintArgs": ["--errors-only"]
}

Answer 1

What is a "python extension"? there now everything is native in one installation package