[issue5094] datetime lacks concrete tzinfo impl. for UTC

[Brett Cannon]

Brett Cannon <brett at python.org> added the comment:

So you want a third argument that lets you flag if the timezone is DST or not? I still don't think that will be necessary. If people want to add that they can very easily subclass the timezone class and add support for it. This class should be focused on providing a UTC instance and anything needed for a %z directive in strptime, nothing more. Anything fancier can be handled by libraries like pytz as they need it. Once again, keep the APi as simple as possible and add features as needed. I know how tempting it it is to design upfront, but just trust me, Alexander, we will all get burned for it later.

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<http://bugs.python.org/issue5094>
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