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-rw-r--r--tests/test_runner_apps/sample/doctests.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/test_runner_apps/sample/doctests.py b/tests/test_runner_apps/sample/doctests.py
index 8707ecaf86..a657d9bdf3 100644
--- a/tests/test_runner_apps/sample/doctests.py
+++ b/tests/test_runner_apps/sample/doctests.py
@@ -32,6 +32,7 @@ def factorial(n):
"""
import math
+
if not n >= 0:
raise ValueError("n must be >= 0")
if math.floor(n) != n: