[issue23332] datetime.isoformat() -> explicitly mark UTC string as such

[mirabilos]

mirabilos added the comment:

There’s another minor bug here: UTC should append “Z”, not “+00:00”, which other timezones at that offset can do.

Agreed about no timezone being “floating” time in many instances, e.g. the iCalendar format uses that.

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nosy: +mirabilos

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23332>
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