test.test_urllib2.HandlerTests.test_ftp_error fails without network access (running -u-network) #125584
Description
Bug report
Bug description:
The newly added test_ftp_error (in 77133f5, FWICS) is failing in environments without Internet access, even though it is not marked as needing the "network" resource:
======================================================================
FAIL: test_ftp_error (test.test_urllib2.HandlerTests.test_ftp_error)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/urllib/request.py", line 1531, in ftp_open
host = socket.gethostbyname(host)
socket.gaierror: [Errno -3] Temporary failure in name resolution
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/test/test_urllib2.py", line 811, in test_ftp_error
urlopen("ftp://www.pythontest.net/")
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/urllib/request.py", line 489, in open
response = self._open(req, data)
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/urllib/request.py", line 506, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
'_open', req)
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/urllib/request.py", line 466, in _call_chain
result = func(*args)
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/urllib/request.py", line 1533, in ftp_open
raise URLError(msg)
urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/var/tmp/portage/dev-lang/python-3.14.0_alpha1/work/Python-3.14.0a1/Lib/test/test_urllib2.py", line 813, in test_ftp_error
self.assertEqual(raised.reason,
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
f"ftp error: {exception.args[0]}")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: gaierror(-3, 'Temporary failure in name resolution') != 'ftp error: 500 OOPS: cannot change directory:/nonexistent'
CPython versions tested on:
3.14
Operating systems tested on:
Linux