New submission from Joona Mörsky <joonamorsk...@gmail.com>:
When creating list of dictionaries and updating datetime objects one by one,
all values are set to last one of the list.
Ubuntu Linux 4.10.0-40-generic #44~16.04.1-Ubuntu SMP Thu Nov 9 15:37:44 UTC
2017 x86_64 x86_64 x86_64 GNU/Linux
Python 3.5.2
>>>import datetime
>>>b = datetime.datetime.utcnow()
>>>b =
>>>b.replace(hour=0,minute=0,second=0,microsecond=0,tzinfo=datetime.timezone.utc)
>>>a = [{}] * 3
>>>for inx in range(3):
... a[inx]['time'] = b + datetime.timedelta(minutes=inx*10)
[{'time': datetime.datetime(2017, 12, 1, 0, 20, tzinfo=datetime.timezone.utc)},
{'time': datetime.datetime(2017, 12, 1, 0, 20, tzinfo=datetime.timezone.utc)},
{'time': datetime.datetime(2017, 12, 1, 0, 20, tzinfo=datetime.timezone.utc)}]
>>>import datetime
>>>b = datetime.datetime.utcnow()
>>>b =
>>>b.replace(hour=0,minute=0,second=0,microsecond=0,tzinfo=datetime.timezone.utc)
>>>a = [ ]
>>>for inx in range(3):
... a.append({"time": b + datetime.timedelta(minutes=inx*10)})
[{'time': datetime.datetime(2017, 12, 1, 0, 0, tzinfo=datetime.timezone.utc)},
{'time': datetime.datetime(2017, 12, 1, 0, 10, tzinfo=datetime.timezone.utc)},
{'time': datetime.datetime(2017, 12, 1, 0, 20, tzinfo=datetime.timezone.utc)}]
----------
components: Interpreter Core
messages: 307382
nosy: Joona Mörsky
priority: normal
severity: normal
status: open
title: When creating list of dictionaries and updating datetime objects one by
one, all values are set to last one of the list.
type: behavior
versions: Python 3.5
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32194>
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