Merge branch '0.29.x'

.travis.yml

@@ -102,7 +102,6 @@ matrix:
     - env: BACKEND=c EXCLUDE="--listfile=tests/pypy_bugs.txt bugs"
     - env: BACKEND=c EXCLUDE="--listfile=tests/pypy_bugs.txt --listfile=tests/pypy2_bugs.txt bugs"
 
-
 before_install:
   - |
     if [ "$TRAVIS_OS_NAME" == "linux" ]; then

appveyor.yml

@@ -88,6 +88,7 @@ branches:
   only:
     - master
     - release
+    - 0.29.x
 
 init:
   - "ECHO Python %PYTHON_VERSION% (%PYTHON_ARCH%bit) from %PYTHON%"

tests/run/test_exceptions.pyx

@@ -13,11 +13,16 @@ import pickle
 import weakref
 import errno
 
-from test.support import (TESTFN, captured_stderr, check_impl_detail,
-                          check_warnings, gc_collect,
+from test.support import (captured_stderr, check_impl_detail, gc_collect,
                           # no_tracing, cpython_only,
-                          unlink, import_module, script_helper,
-                          SuppressCrashReport)
+                          script_helper, SuppressCrashReport)
+try:
+    from test.support.os_helper import TESTFN, unlink
+    from test.support.warnings_helper import check_warnings
+    from test.support.import_helper import import_module
+except ImportError:
+    # Python 3.9 and older
+    from test.support import check_warnings
 
 no_tracing = unittest.skip("For nested functions, Cython generates a C call without recursion checks.")