diff --git a/solutions/fizz_buzz.py b/solutions/fizz_buzz.py
index 36daead22..e234075bd 100644
--- a/solutions/fizz_buzz.py
+++ b/solutions/fizz_buzz.py
@@ -1,5 +1,5 @@
 """
-This module provides a function that generates a list of numbers from 1 to n 
+This module provides a function that generates a list of numbers from 1 to n
 with specific rules for multiples of 3 and 5.
 
 For each number in the range:
@@ -9,13 +9,13 @@
 
 Features:
 - Input validation to ensure that the input is a positive integer.
-- Customizable output format (e.g., changing the words "Fizz" and "Buzz" 
+- Customizable output format (e.g., changing the words "Fizz" and "Buzz"
   to user-defined strings).
 - Ability to generate results as a string instead of a list.
 
 Example:
 >>> fizz_buzz(15)
-[1, 2, 'Fizz', 4, 'Buzz', 'Fizz', 7, 8, 'Fizz', 'Buzz', 11, 'Fizz', 13, 
+[1, 2, 'Fizz', 4, 'Buzz', 'Fizz', 7, 8, 'Fizz', 'Buzz', 11, 'Fizz', 13,
   14, 'FizzBuzz']
 """
 
@@ -31,7 +31,7 @@ def fizz_buzz(n: int) -> list:
     n (int): The upper limit of the range (inclusive) to generate.
 
     Returns:
-    list: A list containing the numbers and/or string representations according 
+    list: A list containing the numbers and/or string representations according
     to the rules.
 
     Raises:
@@ -41,7 +41,7 @@ def fizz_buzz(n: int) -> list:
     Example:
     >>> fizz_buzz(10)
     [1, 2, 'Fizz', 4, 'Buzz', 'Fizz', 7, 8, 'Fizz', 'Buzz']
-    
+
     """
     # Defensive assertions
     if not isinstance(n, int):
@@ -51,11 +51,13 @@ def fizz_buzz(n: int) -> list:
     results = []  # Initialize an empty list to store the results
     for i in range(1, n + 1):
         if i % 3 == 0 and i % 5 == 0:
-            results.append("FizzBuzz")  # Append "FizzBuzz" for multiples of both 3 and 5
+            results.append(
+                "FizzBuzz"
+            )  # Append "FizzBuzz" for multiples of both 3 and 5
         elif i % 3 == 0:
-            results.append("Fizz")      # Append "Fizz" for multiples of 3
+            results.append("Fizz")  # Append "Fizz" for multiples of 3
         elif i % 5 == 0:
-            results.append("Buzz")      # Append "Buzz" for multiples of 5
+            results.append("Buzz")  # Append "Buzz" for multiples of 5
         else:
-            results.append(i)           # Append the number itself if not a multiple of 3 or 5
+            results.append(i)  # Append the number itself if not a multiple of 3 or 5
     return results  # Return the list of results
diff --git a/solutions/tests/test_fizz_buzz.py b/solutions/tests/test_fizz_buzz.py
index ab526fdaf..c24280a5c 100644
--- a/solutions/tests/test_fizz_buzz.py
+++ b/solutions/tests/test_fizz_buzz.py
@@ -20,8 +20,21 @@ class TestFizzBuzz(unittest.TestCase):
     def test_fizzbuzz_15(self):
         """Test FizzBuzz for n = 15."""
         expected = [
-            1, 2, "Fizz", 4, "Buzz", "Fizz", 7, 8, "Fizz",
-            "Buzz", 11, "Fizz", 13, 14, "FizzBuzz"
+            1,
+            2,
+            "Fizz",
+            4,
+            "Buzz",
+            "Fizz",
+            7,
+            8,
+            "Fizz",
+            "Buzz",
+            11,
+            "Fizz",
+            13,
+            14,
+            "FizzBuzz",
         ]
         self.assertEqual(fizz_buzz(15), expected)
 
@@ -60,10 +73,36 @@ def test_fizzbuzz_non_integer(self):
     def test_fizzbuzz_large_number(self):
         """Test FizzBuzz for a larger number n = 30."""
         expected = [
-            1, 2, "Fizz", 4, "Buzz", "Fizz", 7, 8, "Fizz",
-            "Buzz", 11, "Fizz", 13, 14, "FizzBuzz", 16,
-            17, "Fizz", 19, "Buzz", "Fizz", 22, 23, "Fizz",
-            "Buzz", 26, "Fizz", 28, 29, "FizzBuzz"
+            1,
+            2,
+            "Fizz",
+            4,
+            "Buzz",
+            "Fizz",
+            7,
+            8,
+            "Fizz",
+            "Buzz",
+            11,
+            "Fizz",
+            13,
+            14,
+            "FizzBuzz",
+            16,
+            17,
+            "Fizz",
+            19,
+            "Buzz",
+            "Fizz",
+            22,
+            23,
+            "Fizz",
+            "Buzz",
+            26,
+            "Fizz",
+            28,
+            29,
+            "FizzBuzz",
         ]
         self.assertEqual(fizz_buzz(30), expected)