But they can also be easily installed from the official JetBrains Plugin Repository:
1. In PyCharm, open the Settings/Preferences dialog (CTRL+Alt+S), click Plugins.
2. Click Browse repositories.
3. In the Browse Repositories dialog that opens, right-click on the plugin named "Pylint" or "Mypy" and select Download and Install.
4. Confirm your intention to download and install the selected plugin.
5. Click Close.
6. Click OK in the Settings dialog and restart PyCharm for the changes to take effect.
Thanks and enjoy linting!