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Intern UTC timezone #53429
Description
| BPO | 9183 |
|---|---|
| Nosy | @freddrake, @mdickinson, @abalkin |
| Files |
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = 'https://github.com/abalkin'
closed_at = <Date 2010-10-14.17:07:22.573>
created_at = <Date 2010-07-06.21:55:52.215>
labels = ['extension-modules', 'easy', 'library', 'performance']
title = 'Intern UTC timezone'
updated_at = <Date 2010-10-14.17:07:22.572>
user = 'https://github.com/abalkin'bugs.python.org fields:
activity = <Date 2010-10-14.17:07:22.572>
actor = 'belopolsky'
assignee = 'belopolsky'
closed = True
closed_date = <Date 2010-10-14.17:07:22.573>
closer = 'belopolsky'
components = ['Extension Modules', 'Library (Lib)']
creation = <Date 2010-07-06.21:55:52.215>
creator = 'belopolsky'
dependencies = []
files = ['17885', '17889', '18234']
hgrepos = []
issue_num = 9183
keywords = ['patch', 'easy']
message_count = 4.0
messages = ['109432', '109444', '111834', '118693']
nosy_count = 3.0
nosy_names = ['fdrake', 'mark.dickinson', 'belopolsky']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = 'commit review'
status = 'closed'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue9183'
versions = ['Python 3.2']
Activity
abalkin commentedon Jul 6, 2010
Attached patch makes timezone(timedelta(0)) always return the same instance as timezone.utc. See bpo-9051 for pure python implementation.
With this patch, manipulation of aware datetime objects will be as efficient as that of naive datetime objects. Note that having timezone.utc is not enough to assure that the same tzinfo object is used because aware objects can be produced by datetime.strptime(). With this patch,
abalkin commentedon Jul 7, 2010
Python implementation of UTC interning can be done better than the one in bpo-9051. See attached bpo-9183-proto.diff.
abalkin commentedon Jul 28, 2010
Updated issue9183a.diff patch combines C and Python code changes since datetime.py is now in stdlib. Does anyone want to review before it goes in?
abalkin commentedon Oct 14, 2010
Committed in r85485.