C.<p><span class="h-card"><a href="https://hachyderm.io/@arfs6" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>arfs6</span></a></span> </p><p>PEP-8 still says 79 chars IIRC, but at this point that's honoured more in the breach than the observance.</p><p>With modern screens and editors, >80 isn't really a problem for most. Black defaults to 88; I happen to like 96. A company I work for has standardized on 120, which IMHO is too wide.</p><p>Pick something you like, configure black/your editor/etc to observe it, and be consistent, and you'll be fine.</p><p><a href="https://mindly.social/tags/PEP8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PEP8</span></a> <a href="https://mindly.social/tags/linewidth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>linewidth</span></a> <a href="https://mindly.social/tags/width" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>width</span></a> <a href="https://mindly.social/tags/wide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wide</span></a> <a href="https://mindly.social/tags/chars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>chars</span></a> <a href="https://mindly.social/tags/code" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>code</span></a> <a href="https://mindly.social/tags/black" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>black</span></a></p>