Use math.perm instead of math.comb

Author: baseplate-admin

src/django_ltree/paths.py

@@ -30,18 +30,16 @@ def __next__(self):
 
     @staticmethod
     def guess_the_label_size(path_size: int, combination_size: int) -> int:
-        # The theoritical limit for this at the time of writing is 2_538_557_185_841_324_496 (python 3.12.2)
         calculated_path_size = -1  # -1 is here for 0th index items
         # The theoritical limit for this at the time of writing is 32 (python 3.12.2)
         label_size = 0
 
-        # THIS IS AN VERY IMPORTANT CHECK
         last = 0
 
         while True:
-            possible_cominations = math.comb(combination_size, label_size)
+            possible_cominations = math.perm(combination_size, label_size)
             if last > possible_cominations:
-                raise ValueError("We approached the limit of `math.comb`")
+                raise ValueError("There is error in the input value")
 
             last = possible_cominations
             calculated_path_size += possible_cominations