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-rwxr-xr-xtools/testing/selftests/tc-testing/tdc.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/tc-testing/tdc.py b/tools/testing/selftests/tc-testing/tdc.py
index 6c220bc26d9f..7b50775abaf6 100755
--- a/tools/testing/selftests/tc-testing/tdc.py
+++ b/tools/testing/selftests/tc-testing/tdc.py
@@ -445,7 +445,7 @@ def generate_case_ids(alltests):
for c in alltests:
if (c["id"] == ""):
while True:
- newid = str('%04x' % random.randrange(16**4))
+ newid = str('{:04x}'.format(random.randrange(16**4)))
if (does_id_exist(alltests, newid)):
continue
else: