Arvados

Python 3.13 deprecates the functions datetime.datetime.utcnow and datetime.datetime.utcfromtimestamp and they're pending removal in a future version, because the API is basically a footgun and a source of constant bugs.

The release notes include suggested replacements. We use these functions a lot in the current code so getting through them all is going to be a chore. This even causes a test failure:

___________________________________________ ArvPutIntegrationTest.test_silent_mode_no_errors ____________________________________________

self = <tests.test_arv_put.ArvPutIntegrationTest testMethod=test_silent_mode_no_errors>

    def test_silent_mode_no_errors(self):
        self.authorize_with('active')
        tmpdir = self.make_tmpdir()
        with open(os.path.join(tmpdir, 'test.txt'), 'w') as f:
            f.write('hello world')
        pipe = subprocess.Popen(
            [sys.executable, arv_put.__file__] + ['--silent', tmpdir],
            stdin=subprocess.PIPE, stdout=subprocess.PIPE,
            stderr=subprocess.PIPE, env=self.ENVIRON)
        stdout, stderr = pipe.communicate()
        # No console output should occur on normal operations
>       self.assertNotRegex(stderr.decode(), r'.+')
E       AssertionError: Regex matched: '/home/brett/Curii/arvados/sdk/python/arvados/commands/put.py:1200: 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).' matches '.+' in '/home/brett/Curii/arvados/sdk/python/arvados/commands/put.py:1200: 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).\n  datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC"),\n'

tests/test_arv_put.py:1510: AssertionError