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Mon Jan 18 11:52:08 EST 2016 · https://mail.python.org/pipermail/python-dev/2016-January/142765.html

I'm usually fine with code like this:

     if ( ... )
         return

But when there is a multi-line 'else' clause, I just want to use braces 
for both 'if' and its 'else'.  So, for consistency, I'm +1 for 
recommending to use braces everywhere.

And +1 for requiring to use braces if one of the clauses of the 'if' 
statement is multi-line.

Yury

On 2016-01-17 2:10 PM, Brett Cannon wrote:
> While doing a review of http://bugs.python.org/review/26129/ I asked 
> to have curly braces put around all `if` statement bodies. Serhiy 
> pointed out that PEP 7 says curly braces are optional: 
> https://www.python.org/dev/peps/pep-0007/#id5. I would like to change 
> that.
>
> My argument is to require them to prevent bugs like the one Apple made 
> with OpenSSL about two years ago: 
> https://www.imperialviolet.org/2014/02/22/applebug.html. Skipping the 
> curly braces is purely an aesthetic thing while leaving them out can 
> lead to actual bugs.
>
> Anyone object if I update PEP 7 to remove the optionality of curly 
> braces in PEP 7?
>
>
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[Python-Dev] Update PEP 7 to require curly braces in C