File python39-build.patch of Package python-future

From c341d5497788923cc6ea0bd1358279f2147aa167 Mon Sep 17 00:00:00 2001
From: Alexander Shadchin <shadchin@yandex-team.ru>
Date: Sun, 15 Nov 2020 13:01:39 +0300
Subject: [PATCH 1/6] Add support Python 3.9

---
 src/future/moves/_dummy_thread.py          |    5 ++++-
 src/future/standard_library/__init__.py    |    2 +-
 tests/test_future/test_builtins.py         |    2 ++
 tests/test_future/test_standard_library.py |    3 ++-
 tests/test_future/test_urllib2.py          |    3 +++
 tests/test_future/test_urllib_toplevel.py  |    5 +++--
 6 files changed, 15 insertions(+), 5 deletions(-)

--- a/src/future/moves/_dummy_thread.py
+++ b/src/future/moves/_dummy_thread.py
@@ -2,7 +2,10 @@ from __future__ import absolute_import
 from future.utils import PY3
 
 if PY3:
-    from _dummy_thread import *
+    try:
+        from _dummy_thread import *
+    except ImportError:
+        from _thread import *
 else:
     __future_module__ = True
     from dummy_thread import *
--- a/src/future/standard_library/__init__.py
+++ b/src/future/standard_library/__init__.py
@@ -125,7 +125,7 @@ RENAMES = {
            # 'Tkinter': 'tkinter',
            '_winreg': 'winreg',
            'thread': '_thread',
-           'dummy_thread': '_dummy_thread',
+           'dummy_thread': '_dummy_thread' if sys.version_info < (3, 9) else '_thread',
            # 'anydbm': 'dbm',   # causes infinite import loop
            # 'whichdb': 'dbm',  # causes infinite import loop
            # anydbm and whichdb are handled by fix_imports2
--- a/tests/test_future/test_standard_library.py
+++ b/tests/test_future/test_standard_library.py
@@ -422,7 +422,8 @@ class TestStandardLibraryReorganization(
 
     def test_underscore_prefixed_modules(self):
         import _thread
-        import _dummy_thread
+        if sys.version_info < (3, 9):
+            import _dummy_thread
         import _markupbase
         self.assertTrue(True)
 
--- a/tests/test_future/test_urllib_toplevel.py
+++ b/tests/test_future/test_urllib_toplevel.py
@@ -781,8 +781,9 @@ class UnquotingTests(unittest.TestCase):
                          "%s" % result)
         self.assertRaises((TypeError, AttributeError), urllib_parse.unquote, None)
         self.assertRaises((TypeError, AttributeError), urllib_parse.unquote, ())
-        with support.check_warnings(('', BytesWarning), quiet=True):
-            self.assertRaises((TypeError, AttributeError), urllib_parse.unquote, bytes(b''))
+        if sys.version_info < (3, 9):
+            with support.check_warnings(('', BytesWarning), quiet=True):
+                self.assertRaises((TypeError, AttributeError), urllib_parse.unquote, bytes(b''))
 
     def test_unquoting_badpercent(self):
         # Test unquoting on bad percent-escapes
--- a/tests/test_future/test_builtins.py
+++ b/tests/test_future/test_builtins.py
@@ -1305,6 +1305,8 @@ class BuiltinTest(unittest.TestCase):
         self.assertAlmostEqual(pow(-1, 1/3), 0.5 + 0.8660254037844386j)
 
         # Raises TypeError in Python < v3.5, ValueError in v3.5:
+        if sys.version_info < (3, 8):
+            self.assertRaises((TypeError, ValueError), pow, -1, -2, 3)
         self.assertRaises(ValueError, pow, 1, 2, 0)
 
         self.assertRaises(TypeError, pow)
--- a/tests/test_future/test_urllib2.py
+++ b/tests/test_future/test_urllib2.py
@@ -710,6 +710,9 @@ class HandlerTests(unittest.TestCase):
             ("ftp://localhost/baz.gif;type=a",
              "localhost", ftplib.FTP_PORT, "", "", "A",
              [], "baz.gif", None),
+            ("ftp://localhost/baz.gif",
+             "localhost", ftplib.FTP_PORT, "", "", "I",
+             [], "baz.gif", "image/gif"),
             ]:
             req = Request(url)
             req.timeout = None