diff --git a/CIME/code_checker.py b/CIME/code_checker.py
index 4c05f22e477..fdc1eedefd8 100644
--- a/CIME/code_checker.py
+++ b/CIME/code_checker.py
@@ -45,11 +45,14 @@ def _run_pylint(all_files, interactive):
     #     cmd_options +=",relative-import"
 
     # add init-hook option
-    cmd_options += ' --init-hook=\'import sys; sys.path.extend(("%s","%s","%s","%s"))\'' % (
-        os.path.join(cimeroot, "CIME"),
-        os.path.join(cimeroot, "CIME", "Tools"),
-        os.path.join(cimeroot, "scripts", "fortran_unit_testing", "python"),
-        os.path.join(srcroot, "components", "cmeps", "cime_config", "runseq"),
+    cmd_options += (
+        ' --init-hook=\'import sys; sys.path.extend(("%s","%s","%s","%s"))\''
+        % (
+            os.path.join(cimeroot, "CIME"),
+            os.path.join(cimeroot, "CIME", "Tools"),
+            os.path.join(cimeroot, "scripts", "fortran_unit_testing", "python"),
+            os.path.join(srcroot, "components", "cmeps", "cime_config", "runseq"),
+        )
     )
 
     files = " ".join(all_files)