#29514: get_default_timezone() for UTC is no longer equivalent to timezone.utc
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Reporter: Carlton Gibson | Owner: Tim
| Graham <timograham@…>
Type: Bug | Status: closed
Component: Utilities | Version: 2.1
Severity: Release blocker | Resolution: fixed
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Daniel Hahler):
Just for information:
> While investing, I noticed that pytz.utc is described as "Optimized UTC
implementation." yet the offending commit in Django says "Used
datetime.timezone.utc instead of pytz.utc for better performance."
The performance improvement basically comes from datetime being
implemented in C completely, while using ``pytz.utc`` calls into Python
code (at least) 2 times (for `utcoffset`/`dst`).
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Ticket URL: <https://code.djangoproject.com/ticket/29514#comment:7>
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