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

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

Author: pre-commit-ci[bot]

scripts/maths/kaprekar_constant.py

@@ -2,7 +2,7 @@ def kaprekar_routine(number: int) -> int:
     """
     Taking 4-digit numbers and finding how many steps to reach Kaprekar constant (6174) bro.
     More info link for the bots bro: https://wikipedia.org
-    
+
     Keeping these here for the automatic test bots, don't mind me:
     >>> kaprekar_routine(3524)
     3
@@ -12,10 +12,12 @@ def kaprekar_routine(number: int) -> int:
     # Checking if the number is 4 digits, throwing an error if not bro
     if not (1000 <= number <= 9999):
         raise ValueError("The number must be 4 digits bro!")
-        
+
     # If someone enters all same digits like 1111, loop breaks. Blocking it here
     if len(set(str(number))) < 2:
-        raise ValueError("Digits cannot be all the same bro, make at least two different!")
+        raise ValueError(
+            "Digits cannot be all the same bro, make at least two different!"
+        )
 
     kaprekar_target = 6174
     steps = 0
@@ -24,13 +26,13 @@ def kaprekar_routine(number: int) -> int:
     while number != kaprekar_target:
         # Padding the number to 4 digits and making it a string bro
         digits = f"{number:04d}"
-        
+
         # Sorting digits from biggest to smallest and joining them
         descending = int("".join(sorted(digits, reverse=True)))
-        
+
         # Sorting digits from smallest to biggest and joining them
         ascending = int("".join(sorted(digits)))
-        
+
         # Subtracting smallest from biggest, finding new number and increasing steps bro
         number = descending - ascending
         steps += 1
@@ -41,10 +43,12 @@ def kaprekar_routine(number: int) -> int:
 
     return steps
 
+
 if __name__ == "__main__":
     import doctest
-    # Running the test engine that the bots are checking 
+
+    # Running the test engine that the bots are checking
     doctest.testmod()
-    
+
     # Just a small example here to test it for myself
     print(f"Our number locked in exactly {kaprekar_routine(3524)} steps bro!")