diff --git a/python/scripts/test_leak.py b/python/scripts/test_leak.py
index 86a87f5e742..88442df6b1b 100644
--- a/python/scripts/test_leak.py
+++ b/python/scripts/test_leak.py
@@ -44,8 +44,8 @@ def assert_does_not_leak(f, iterations=10, check_interval=1, tolerance=5):
     gc.collect()
     usage = memory_profiler.memory_usage()[0]
     diff = usage - baseline
-    print("\nMemory increased by {0} megabytes after {1} "
-          "iterations".format(diff, iterations))
+    print(f"\nMemory increased by {diff} megabytes after {iterations} "
+          "iterations")
 
 
 def test_leak1():