diff --git a/config.py b/config.py
index e9b7718..df4f06a 100644
--- a/config.py
+++ b/config.py
@@ -58,7 +58,7 @@ def __init__(
         enable_mentor_count: str,
         min_mentor_comments: str,
         max_comments_eval: str,
-        heavily_involved_cutoff: str ,
+        heavily_involved_cutoff: str,
         search_query: str,
     ):
         self.gh_app_id = gh_app_id
@@ -102,6 +102,7 @@ def __repr__(self):
             f"{self.search_query})"
         )
 
+
 def get_bool_env_var(env_var_name: str) -> bool:
     """Get a boolean environment variable.
 
diff --git a/issue_metrics.py b/issue_metrics.py
index 3a8ae12..f3d28a0 100644
--- a/issue_metrics.py
+++ b/issue_metrics.py
@@ -31,6 +31,7 @@
 from json_writer import write_to_json
 from labels import get_label_metrics, get_stats_time_in_labels
 from markdown_writer import write_to_markdown
+from most_active_mentors import count_comments_per_user, get_mentor_count
 from time_to_answer import get_stats_time_to_answer, measure_time_to_answer
 from time_to_close import get_stats_time_to_close, measure_time_to_close
 from time_to_first_response import (
@@ -40,12 +41,6 @@
 from time_to_merge import measure_time_to_merge
 from time_to_ready_for_review import get_time_to_ready_for_review
 
-from most_active_mentors import (
-    count_comments_per_user,
-    get_mentor_count
-)
-from config import get_env_vars
-
 
 def search_issues(
     search_query: str, github_connection: github3.GitHub
diff --git a/most_active_mentors.py b/most_active_mentors.py
index 4a5dfb1..5b9acd0 100755
--- a/most_active_mentors.py
+++ b/most_active_mentors.py
@@ -33,13 +33,11 @@
         Count the number of mentors active at least n times
 
 """
+from collections import Counter
 from datetime import datetime
 from typing import List, Union
 
-from collections import Counter
-
 import github3
-
 from classes import IssueWithMetrics
 
 
diff --git a/test_most_active_mentors.py b/test_most_active_mentors.py
index 550b988..7c5defd 100755
--- a/test_most_active_mentors.py
+++ b/test_most_active_mentors.py
@@ -15,10 +15,7 @@
 from unittest.mock import MagicMock
 
 from classes import IssueWithMetrics
-from most_active_mentors import (
-    count_comments_per_user,
-    get_mentor_count,
-)
+from most_active_mentors import count_comments_per_user, get_mentor_count
 
 
 class TestCountCommentsPerUser(unittest.TestCase):