1 files changed, 11 insertions, 10 deletions
diff --git a/tools/run_tests/sanity/check_tracer_sanity.py b/tools/run_tests/sanity/check_tracer_sanity.py
index 997ec79d02..c4c76530de 100755
--- a/tools/run_tests/sanity/check_tracer_sanity.py
+++ b/tools/run_tests/sanity/check_tracer_sanity.py
@@ -26,21 +26,22 @@ errors = 0
 tracers = []
 pattern = re.compile("GRPC_TRACER_INITIALIZER\((true|false), \"(.*)\"\)")
 for root, dirs, files in os.walk('src/core'):
-  for filename in files:
-    path = os.path.join(root, filename)
-    if os.path.splitext(path)[1] != '.c': continue
-    with open(path) as f:
-      text = f.read()
-    for o in pattern.findall(text):
-      tracers.append(o[1])
+    for filename in files:
+        path = os.path.join(root, filename)
+        if os.path.splitext(path)[1] != '.c': continue
+        with open(path) as f:
+            text = f.read()
+        for o in pattern.findall(text):
+            tracers.append(o[1])
 
 with open('doc/environment_variables.md') as f:
- text = f.read()
+    text = f.read()
 
 for t in tracers:
     if t not in text:
-        print("ERROR: tracer \"%s\" is not mentioned in doc/environment_variables.md" % t)
+        print(
+            "ERROR: tracer \"%s\" is not mentioned in doc/environment_variables.md"
+            % t)
         errors += 1
 
-
 assert errors == 0