"Maximum code line length remains a debated convention, and a 2025 essay by Glyph Lefkowitz argues that around 90 characters is reasonable while treating the exact number as personal preference."
The essay calls line length an age-old debate, argues that roughly 80 plus 10 percent is reasonable, and explicitly says the exact number remains a matter of personal preference. + Source year based on the current stable Black documentation release shown as version 26.5.1; verified 2026-09-21.
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