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Also the author seems to have missed that this char limit is changing. In Python, for example, an official style guide update in 2013 [1] allows for 100 char line length.

[1] https://www.python.org/dev/peps/pep-0008/#maximum-line-lengt...

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To clarify, PEP 8 nonetheless recommends that lines be limited to 79 characters, and even recommends capping docstrings and comments to 72 characters. The python standard library follows those guidelines.

The 100-character allowance is for code "maintained exclusively or primarily by a team that can reach agreement on this issue".

The author wrote this in 2012, so at the time it may have been impossible to predict the 2013 update.

A style guide doesn't change on a whim. I can nearly guarantee the shift was visible coming down the pipeline a year earlier.

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