diff --git a/tools/attention_list.py b/tools/attention_list.py
index 470019ff..eea62343 100644
--- a/tools/attention_list.py
+++ b/tools/attention_list.py
@@ -24,18 +24,22 @@ import json
 import threading
 
 class FailedPR:
+    """Base class for failed Pull Requests"""
 
-    def __init__(self, host, url, created_at, updated_at, target_url=None, status=None, error=None):
+    def __init__(self, host, url, created_at, updated_at, zuul_url=None, status=None, error=None):
         self.host = host
         self.url = url
         self.status = status
-        self.target_url = target_url
+        self.zuul_url = zuul_url
         self.created_at = created_at
         self.updated_at = updated_at
         self.error = error
 
 
 def get_args():
+    """
+    Function to collect parameter.
+    """
     parser = argparse.ArgumentParser(
         description='Bootstrap repositories.')
     parser.add_argument(
@@ -89,6 +93,9 @@ def get_args():
     return parser.parse_args()
 
 def get_gitea_repos(url, headers, gitea_org):
+    """
+    Get all Repositories of one Gitea orgainzation
+    """
     repositories = []
     i = 1
 
@@ -112,6 +119,9 @@ def get_gitea_repos(url, headers, gitea_org):
     return repositories
 
 def get_gitea_prs(url, headers, gitea_org, repo):
+    """
+    Collect all Pull Requests of a Gitea Repository
+    """
     pullrequests = []
 
     try:
@@ -129,6 +139,9 @@ def get_gitea_prs(url, headers, gitea_org, repo):
     return pullrequests
 
 def get_failed_gitea_commits(pull, url, gitea_org, repo, headers):
+    """
+    Collect all failed gitea commits of one repository.
+    """
     failed_commits = []
     try:
         req_url = (url + 'repos/' + gitea_org + '/' + repo['name'] +
@@ -140,7 +153,7 @@ def get_failed_gitea_commits(pull, url, gitea_org, repo, headers):
                     host='gitea',
                     url=pull['url'],
                     status=res_sta.json()[0]['status'],
-                    target_url=res_sta.json()[0]['target_url'],
+                    zuul_url=res_sta.json()[0]['target_url'],
                     created_at=pull['created_at'],
                     updated_at=res_sta.json()[0]['updated_at'],
                     error=1000
@@ -156,6 +169,9 @@ def get_failed_gitea_commits(pull, url, gitea_org, repo, headers):
     return failed_commits
 
 def get_github_repos(url, headers, gh_org):
+    """
+    Get all repositories of one GitHub organization
+    """
     repositories = []
     i = 1
 
@@ -178,6 +194,9 @@ def get_github_repos(url, headers, gh_org):
     return repositories
 
 def get_github_prs(url, headers, gh_org, repo):
+    """
+    Get all Pull Requests of one GitHub repository
+    """
     pullrequests = []
     i = 1
 
@@ -201,6 +220,9 @@ def get_github_prs(url, headers, gh_org, repo):
     return pullrequests
 
 def get_failed_gh_commits(pull, url, gh_org, repo, headers):
+    """
+    Collect all Failed Pull Requests of one GitHub repository
+    """
     failed_commits = []
     try:
         req_url = (url + 'repos/' + gh_org + '/' + repo['name'] +
@@ -213,7 +235,7 @@ def get_failed_gh_commits(pull, url, gh_org, repo, headers):
                         host='github',
                         url=pull['html_url'],
                         status=res_sta.json()['check_runs'][0]['conclusion'],
-                        target_url=(res_sta.json()['check_runs']
+                        zuul_url=(res_sta.json()['check_runs']
                                     [0]['details_url']),
                         created_at=pull['created_at'],
                         updated_at=(res_sta.json()['check_runs']
@@ -240,13 +262,21 @@ def get_failed_gh_commits(pull, url, gh_org, repo, headers):
     return failed_commits
 
 def create_json_result(failed_commits):
-    failed_commits_json = []
-    for o in failed_commits:
-        failed_commits_json.append(vars(o))
+    """
+    Create Result
+    """
     result = {}
     result['meta'] = {}
-    result['meta']['count'] = len(failed_commits_json)
-    result['data'] = failed_commits_json
+    result['data'] = []
+    if len(failed_commits) != 0:
+        failed_commits_json = []
+        for o in failed_commits:
+            failed_commits_json.append(vars(o))
+        result['meta']['count'] = len(failed_commits_json)
+        result['data'] = failed_commits_json
+    else:
+        result['meta']['count'] = 0
+
     return json.dumps(result)