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-rw-r--r--Lib/unittest/loader.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/unittest/loader.py b/Lib/unittest/loader.py
index 5d11b6e..f00f38d 100644
--- a/Lib/unittest/loader.py
+++ b/Lib/unittest/loader.py
@@ -5,6 +5,7 @@ import re
import sys
import traceback
import types
+import functools
from fnmatch import fnmatch
@@ -141,7 +142,7 @@ class TestLoader(object):
testFnNames = testFnNames = list(filter(isTestMethod,
dir(testCaseClass)))
if self.sortTestMethodsUsing:
- testFnNames.sort(key=util.CmpToKey(self.sortTestMethodsUsing))
+ testFnNames.sort(key=functools.cmp_to_key(self.sortTestMethodsUsing))
return testFnNames
def discover(self, start_dir, pattern='test*.py', top_level_dir=None):