disable rounding test on windows and rename user-agent

Author: rok

python/pyarrow/tests/test_compute.py

@@ -2797,10 +2797,10 @@ def _check_temporal_rounding(ts, values, unit):
         np.testing.assert_array_equal(result, expected)
 
 
-# # TODO(GH-48743): Re-enable once GCC/Windows timezone issues are resolved
-# # https://github.com/apache/arrow/issues/48743
-# @pytest.mark.skipif(sys.platform == "win32",
-#                     reason="Skipping temporal rounding tests on GCC/Windows")
+# TODO(GH-48743): Re-enable once GCC/Windows timezone issues are resolved
+# https://github.com/apache/arrow/issues/48743
+@pytest.mark.skipif(sys.platform == "win32",
+                    reason="Skipping temporal rounding tests on GCC/Windows")
 @pytest.mark.timezone_data
 @pytest.mark.parametrize('unit', ("nanosecond", "microsecond", "millisecond",
                                   "second", "minute", "hour", "day"))

python/pyarrow/util.py

@@ -232,7 +232,7 @@ def _break_traceback_cycle_from_frame(frame):
 
 def _download_urllib(url, out_path):
     from urllib.request import urlopen, Request
-    req = Request(url, headers={'User-Agent': 'Mozilla/5.0'})
+    req = Request(url, headers={'User-Agent': 'pyarrow'})
     with urlopen(req) as response:
         with open(out_path, 'wb') as f:
             f.write(response.read())