datetime.utcnow is deprecated in Python 3.12

[tirkarthi]

aiobotocore/aiobotocore/signers.py

Line 262 in 5ce00b8

datetime_now = datetime.datetime.utcnow()

Ref : python/cpython#103857

datetime.datetime’s utcnow() and utcfromtimestamp() are deprecated and will be removed in a future version. Instead, use timezone-aware objects to represent datetimes in UTC: respectively, call now() and fromtimestamp() with the tz parameter set to datetime.UTC. (Contributed by Paul Ganssle in gh-103857.)

[thehesiod]

that comes from botocore: https://github.com/boto/botocore/blob/1.29.161/botocore/signers.py#L593 please log there

[thehesiod]

btw, didn't follow the instructions in logging an issue :)

[tirkarthi]

Sorry, I right clicked on the code line in GitHub UI and selected reference in new issue which seems to not show any template. I will check on the other repo. Thanks.

[thehesiod]

interesting, sounds like a github bug, here's the template btw: https://github.com/aio-libs/aiobotocore/issues/new?assignees=&labels=&projects=&template=bug_report.md&title=

[phillipuniverse]

To make this slightly easier to find via Google, this is the Deprecation warning raised on Python 3.12:

    def add_auth(self, request):
        if self.credentials is None:
            raise NoCredentialsError()
>       datetime_now = datetime.datetime.utcnow()
E       DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).

Tracked in botocore at boto/botocore#3088 which references a still-open issue at boto/boto3#3889.

In my case with pytest, fix is:

[tool.pytest.ini_options]
filterwarnings = [
    "error", # treat all warnings as errors
    "ignore:datetime.datetime.utcnow\\(\\) is deprecated and scheduled for removal in a future version.*:DeprecationWarning",
]