[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

sorts/merge_sort.py

@@ -38,8 +38,8 @@ def merge(left: list, right: list) -> list:
         """
         result = []
         left_index = right_index = 0
-        length_left , length_right = len(left) , len(right)
-        
+        length_left, length_right = len(left), len(right)
+
         while (left_index < length_left) and (right_index < length_right):
             if left[left_index] < right[right_index]:
                 result.append(left[left_index])
@@ -48,8 +48,8 @@ def merge(left: list, right: list) -> list:
                 result.append(right[right_index])
                 right_index += 1
 
-        result.extend(left[left_index: ])
-        result.extend(right[right_index: ])
+        result.extend(left[left_index:])
+        result.extend(right[right_index:])
         return result
 
     if len(collection) <= 1: