diff --git a/doc/scripts/eval_performance.py b/doc/scripts/eval_performance.py
index 0383d4d598d55..1e1a678855eaf 100644
--- a/doc/scripts/eval_performance.py
+++ b/doc/scripts/eval_performance.py
@@ -5,6 +5,8 @@
 
 from pandas import DataFrame
 
+#check
+
 setup_common = """from pandas import DataFrame
 import numpy as np
 df = DataFrame(np.random.randn(%d, 3), columns=list('abc'))