diff --git a/examples/Lambda.py b/examples/Lambda.py
index <HASH>..<HASH> 100644
--- a/examples/Lambda.py
+++ b/examples/Lambda.py
@@ -113,7 +113,7 @@ LambdaExecutionRole = t.add_resource(Role(
     AssumeRolePolicyDocument={
         "Version": "2012-10-17",
         "Statement": [{
-            "Action": [ "sts:AssumeRole" ],
+            "Action": ["sts:AssumeRole"],
             "Effect": "Allow",
             "Principal": {
                 "Service": ["lambda.amazonaws.com"]
Fix pycodestyle issues with examples/Lambda.py