Issue #20939: Use www.example.com instead of www.python.org to avoid test

failures when ssl is not present.

Lib/test/test_site.py

@@ -414,8 +414,10 @@ class ImportSideEffectTests(unittest.TestCase):
     @test.support.requires_resource('network')
     @unittest.skipUnless(sys.version_info[3] == 'final',
                          'only for released versions')
+    @unittest.skipUnless(hasattr(urllib.request, "HTTPSHandler"),
+                         'need SSL support to download license')
     def test_license_exists_at_url(self):
-        # This test is a bit fragile since it depends on the format of the
+        # This test `is a bit fragile since it depends on the format of the
         # string displayed by license in the absence of a LICENSE file.
         url = license._Printer__data.split()[1]
         req = urllib.request.Request(url, method='HEAD')

Lib/test/test_urllib2.py

@@ -1440,7 +1440,7 @@ class MiscTests(unittest.TestCase):
                          'test requires network access')
     def test_issue16464(self):
         opener = urllib.request.build_opener()
-        request = urllib.request.Request("http://www.python.org/~jeremy/")
+        request = urllib.request.Request("http://www.example.com/")
         self.assertEqual(None, request.data)
 
         opener.open(request, "1".encode("us-ascii"))

Lib/test/test_urllib2net.py

@@ -83,7 +83,7 @@ class CloseSocketTest(unittest.TestCase):
     def test_close(self):
         # calling .close() on urllib2's response objects should close the
         # underlying socket
-        url = "http://www.python.org/"
+        url = "http://www.example.com/"
         with support.transient_internet(url):
             response = _urlopen_with_retry(url)
             sock = response.fp
@@ -263,7 +263,7 @@ class OtherNetworkTests(unittest.TestCase):
 class TimeoutTest(unittest.TestCase):
     def test_http_basic(self):
         self.assertIsNone(socket.getdefaulttimeout())
-        url = "http://www.python.org"
+        url = "http://www.example.com"
         with support.transient_internet(url, timeout=None):
             u = _urlopen_with_retry(url)
             self.addCleanup(u.close)
@@ -271,7 +271,7 @@ class TimeoutTest(unittest.TestCase):
 
     def test_http_default_timeout(self):
         self.assertIsNone(socket.getdefaulttimeout())
-        url = "http://www.python.org"
+        url = "http://www.example.com"
         with support.transient_internet(url):
             socket.setdefaulttimeout(60)
             try:
@@ -283,7 +283,7 @@ class TimeoutTest(unittest.TestCase):
 
     def test_http_no_timeout(self):
         self.assertIsNone(socket.getdefaulttimeout())
-        url = "http://www.python.org"
+        url = "http://www.example.com"
         with support.transient_internet(url):
             socket.setdefaulttimeout(60)
             try:
@@ -294,7 +294,7 @@ class TimeoutTest(unittest.TestCase):
             self.assertIsNone(u.fp.raw._sock.gettimeout())
 
     def test_http_timeout(self):
-        url = "http://www.python.org"
+        url = "http://www.example.com"
         with support.transient_internet(url):
             u = _urlopen_with_retry(url, timeout=120)
             self.addCleanup(u.close)

Lib/test/test_urllibnet.py

@@ -22,8 +22,8 @@ class URLTimeoutTest(unittest.TestCase):
         socket.setdefaulttimeout(None)
 
     def testURLread(self):
-        with support.transient_internet("www.python.org"):
+        with support.transient_internet("www.example.com"):
-            f = urllib.request.urlopen("http://www.python.org/")
+            f = urllib.request.urlopen("http://www.example.com/")
             x = f.read()
 
 
@@ -36,7 +36,7 @@ class urlopenNetworkTests(unittest.TestCase):
     for transparent redirection have been written.
 
     setUp is not used for always constructing a connection to
-    http://www.python.org/ since there a few tests that don't use that address
+    http://www.example.com/ since there a few tests that don't use that address
     and making a connection is expensive enough to warrant minimizing unneeded
     connections.
 
@@ -54,7 +54,7 @@ class urlopenNetworkTests(unittest.TestCase):
 
     def test_basic(self):
         # Simple test expected to pass.
-        with self.urlopen("http://www.python.org/") as open_url:
+        with self.urlopen("http://www.example.com/") as open_url:
             for attr in ("read", "readline", "readlines", "fileno", "close",
                          "info", "geturl"):
                 self.assertTrue(hasattr(open_url, attr), "object returned from "
@@ -63,7 +63,7 @@ class urlopenNetworkTests(unittest.TestCase):
 
     def test_readlines(self):
         # Test both readline and readlines.
-        with self.urlopen("http://www.python.org/") as open_url:
+        with self.urlopen("http://www.example.com/") as open_url:
             self.assertIsInstance(open_url.readline(), bytes,
                                   "readline did not return a string")
             self.assertIsInstance(open_url.readlines(), list,
@@ -71,7 +71,7 @@ class urlopenNetworkTests(unittest.TestCase):
 
     def test_info(self):
         # Test 'info'.
-        with self.urlopen("http://www.python.org/") as open_url:
+        with self.urlopen("http://www.example.com/") as open_url:
             info_obj = open_url.info()
             self.assertIsInstance(info_obj, email.message.Message,
                                   "object returned by 'info' is not an "
@@ -80,14 +80,14 @@ class urlopenNetworkTests(unittest.TestCase):
 
     def test_geturl(self):
         # Make sure same URL as opened is returned by geturl.
-        URL = "https://www.python.org/"
+        URL = "http://www.example.com/"
         with self.urlopen(URL) as open_url:
             gotten_url = open_url.geturl()
             self.assertEqual(gotten_url, URL)
 
     def test_getcode(self):
         # test getcode() with the fancy opener to get 404 error codes
-        URL = "http://www.python.org/XXXinvalidXXX"
+        URL = "http://www.example.com/XXXinvalidXXX"
         with support.transient_internet(URL):
             open_url = urllib.request.FancyURLopener().open(URL)
             try:
@@ -101,7 +101,7 @@ class urlopenNetworkTests(unittest.TestCase):
     @unittest.skipIf(sys.platform in ('win32',), 'not appropriate for Windows')
     def test_fileno(self):
         # Make sure fd returned by fileno is valid.
-        with self.urlopen("http://www.python.org/", timeout=None) as open_url:
+        with self.urlopen("http://www.example.com/", timeout=None) as open_url:
             fd = open_url.fileno()
             with os.fdopen(fd, 'rb') as f:
                 self.assertTrue(f.read(), "reading from file created using fd "
@@ -147,7 +147,7 @@ class urlretrieveNetworkTests(unittest.TestCase):
 
     def test_basic(self):
         # Test basic functionality.
-        with self.urlretrieve("http://www.python.org/") as (file_location, info):
+        with self.urlretrieve("http://www.example.com/") as (file_location, info):
             self.assertTrue(os.path.exists(file_location), "file location returned by"
                             " urlretrieve is not a valid path")
             with open(file_location, 'rb') as f:
@@ -156,7 +156,7 @@ class urlretrieveNetworkTests(unittest.TestCase):
 
     def test_specified_path(self):
         # Make sure that specifying the location of the file to write to works.
-        with self.urlretrieve("http://www.python.org/",
+        with self.urlretrieve("http://www.example.com/",
                               support.TESTFN) as (file_location, info):
             self.assertEqual(file_location, support.TESTFN)
             self.assertTrue(os.path.exists(file_location))
@@ -165,11 +165,11 @@ class urlretrieveNetworkTests(unittest.TestCase):
 
     def test_header(self):
         # Make sure header returned as 2nd value from urlretrieve is good.
-        with self.urlretrieve("http://www.python.org/") as (file_location, info):
+        with self.urlretrieve("http://www.example.com/") as (file_location, info):
             self.assertIsInstance(info, email.message.Message,
                                   "info is not an instance of email.message.Message")
 
-    logo = "http://www.python.org/static/community_logos/python-logo-master-v3-TM.png"
+    logo = "http://www.example.com/"
 
     def test_data_header(self):
         with self.urlretrieve(self.logo) as (file_location, fileheaders):

Misc/NEWS

@@ -103,6 +103,10 @@ Tests
 
 - Issue #20743: Fix a reference leak in test_tcl.
 
+- Issue #20939: Avoid various network test failures due to new
+  redirect of http://www.python.org/ to https://www.python.org:
+  use http://www.example.com instead.
+
 Tools/Demos
 -----------