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1. We don't really allow canonical question and answers. If you want to highlight something you can't whip up some example code and post a Q&A.

   Bit annoying, but it will prevent a wave of crap on the site.

   We were going to share common improvements on GitHub. But we've not got much there.

2. Explaining everything is long. And I don't think everyone wants to know why.

   And so I've stopped explaining why as much any more. I've had maybe one user ask me to provide why, and so I add the why to the answer. Leading to a somewhat 'lazy' answer.

   I may be writing some poorer answer due to not explaining why. And so if you merge this with (1) you could just include a link to the information why, and not suffer any reduction in quality in your answers.

I now write answers more like:

1. Follow PEP8.
2. Don't have bare excepts.
3. Use with when using open.

with open('file', 'w') as f:
    try:
        f.write(1 / int(input()))
    except ZeroDivisionError:
        print("Zero can't be the denominator of a fraction.")