What is this white line in the middle of editor in Spyder?

Pretty much as in the title - the line located vertically in the editor. What is its purpose and how to remove it, since it is pretty distracting. Thanks in advance.

Solution

The line is nothing more than a visual aid to show you the maximum recommended line length. You can change its position or disable it completely from the preferences menu:

Tools -> Preferences -> Completion and linting -> Code style and formatting -> Line length.