style: format code with autopep8

Format code with autopep8

This commit fixes the style issues introduced in 7bd2e9e according to the output
from Autopep8.

Details: None

Author: deepsource-autofix[bot]

KenKen Puzzle Solver/kenken_puzzle_solver.py

@@ -1,4 +1,5 @@
-import math 
+import math
+
 
 def is_valid(board, row, col, num, group_size):
     # Check if 'num' can be placed in the given position without violating the rules
@@ -8,14 +9,16 @@ def is_valid(board, row, col, num, group_size):
             return False
 
     # Check the group constraints
-    group_start_row, group_start_col = row - row % group_size, col - col % group_size
+    group_start_row, group_start_col = row - \
+        row % group_size, col - col % group_size
     for i in range(group_size):
         for j in range(group_size):
             if board[group_start_row + i][group_start_col + j] == num:
                 return False
 
     return True
 
+
 def find_empty_cell(board):
     # Find an empty cell (cell with value 0) on the board and return its coordinates
     for i in range(len(board)):
@@ -24,6 +27,7 @@ def find_empty_cell(board):
                 return i, j
     return None
 
+
 def solve_kenken(board, group_size):
     # Function to solve the KenKen puzzle using backtracking
     empty_cell = find_empty_cell(board)
@@ -44,6 +48,7 @@ def solve_kenken(board, group_size):
 
     return False
 
+
 def validate_puzzle_input(size, groups):
     # Function to validate the user-provided KenKen puzzle input
     # Check for the following conditions:
@@ -63,25 +68,30 @@ def validate_puzzle_input(size, groups):
     valid_operations = {'+', '-', '*', '/'}
     for target, operation in groups:
         if target <= 0:
-            print("Invalid target number. The target number should be greater than 0 for each group.")
+            print(
+                "Invalid target number. The target number should be greater than 0 for each group.")
             return False
         if operation not in valid_operations:
             print("Invalid operation. Valid operations are '+', '-', '*', or '/'.")
             return False
 
     return True
 
+
 def get_puzzle_input():
     # Function to get the KenKen puzzle input from the user
     size = int(input("Enter the size of the grid (e.g., 5 for a 5x5 puzzle): "))
-    group_size = int(input("Enter the size of each group (e.g., 3 for a standard 9x9 puzzle): "))
+    group_size = int(
+        input("Enter the size of each group (e.g., 3 for a standard 9x9 puzzle): "))
 
     groups = []
     for i in range(size):
         while True:
             try:
-                group_target = int(input(f"Enter the target number for group {i + 1}: "))
-                group_operation = input(f"Enter the operation for group {i + 1} (+, -, *, /): ")
+                group_target = int(
+                    input(f"Enter the target number for group {i + 1}: "))
+                group_operation = input(
+                    f"Enter the operation for group {i + 1} (+, -, *, /): ")
                 groups.append((group_target, group_operation))
                 break
             except ValueError:
@@ -93,12 +103,14 @@ def get_puzzle_input():
         print("Invalid puzzle input. Please try again.")
         return None
 
+
 def print_board(board):
     # Function to pretty print the KenKen board
     for row in board:
         print(" ".join(str(num) if num != 0 else "-" for num in row))
     print()
 
+
 def main():
     # Main function to run the KenKen puzzle solver
     print("KenKen Puzzle Solver")
@@ -116,5 +128,6 @@ def main():
         else:
             print("No solution exists.")
 
+
 if __name__ == "__main__":
     main()