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

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

Author: pre-commit-ci[bot]

data_structures/trie/radix_tree.py

@@ -196,9 +196,11 @@ def print_tree(self, height: int = 0) -> None:
         for value in self.nodes.values():
             value.print_tree(height + 1)
 
+
 ## write unit test for the code using unittest library with logic similar to test_trie() function
 ## and call it from main()
 
+
 class TestRadixNode(unittest.TestCase):
     def test_trie(self) -> None:
         words = "banana bananas bandana band apple all beast".split()
@@ -215,10 +217,10 @@ def test_trie(self) -> None:
         assert root.find("bananas")
 
     def test_trie_2(self) -> None:
-        '''
-        now add a new test case which inserts 
+        """
+        now add a new test case which inserts
         foobbb, fooaaa, foo in the given order and checks for different assertions
-        '''
+        """
         words = "foobbb fooaaa foo".split()
         root = RadixNode()
         root.insert_many(words)
@@ -229,5 +231,6 @@ def test_trie_2(self) -> None:
         assert root.find("foobbb")
         assert root.find("fooaaa")
 
+
 if __name__ == "__main__":
     unittest.main()