fix

Author: flybird11111

.github/workflows/example_check_on_pr.yml

@@ -64,7 +64,7 @@ jobs:
             changedFileName="${file}:${changedFileName}"
           done
           echo "$changedFileName was changed"
-          res=`python .github/workflows/scripts/example_checks/detect_changed_example.py --fileNameList $changedFileName`
+          res=`python3 .github/workflows/scripts/example_checks/detect_changed_example.py --fileNameList $changedFileName`
           echo "All changed examples are $res"
 
           if [ "$res" == "[]" ]; then