Lines longer than 80 chars are harder to scan, and sticking to this rule allows tiling of windows. Maximising code windows on a widescreen is a huge waste. Even

Lines longer than 80 chars are harder to scan, and sticking to this rule allows tiling of windows. Maximising code windows on a widescreen is a huge waste. Even with long lines the average line length will be far shorter. This is Guido's reasoning for keeping PEP8's rule to 80 chars.