They're both equally bad IMO.

On Thursday, August 9, 2012, Antoine Pitrou wrote:
Le 08/08/2012 16:28, Guido van Rossum a écrit :
I'd be strongly against changing that rule. If you don't want other
types than bool, use an isinstance check. Code using "is True" is most
likely a bug. (It's different for None, since that has no second value
that is assumed.)

That said, I'm also curious about the answer to Michael's following question:
“why does it say that using an identity check is worse than an equality check?”



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