input: from typing import List
  
  def execute_horror_query(db_path: str) -> List[tuple]:
      """Executes an SQL query to select all rows from the Movies table where the category is 'horror' and returns the result as a list of tuples.
      >>> execute_horror_query('movies.db')
      [(1, 'The Exorcist', 'horror'), (2, 'A Nightmare on Elm Street', 'horror')]
      >>> execute_horror_query('empty_movies.db')
      []
      """
      
      import sqlite3
      conn = sqlite3.connect(db_path) 
      cursor = conn.cursor()
  
      cursor.execute("SELECT * FROM Movies WHERE category = 'horror'")
      result = cursor.fetchall()
  
      conn.close()
      return result
output:     import sqlite3
      conn = sqlite3.connect(db_path) 
      cursor = conn.cursor()
  
      cursor.execute("SELECT * FROM Movies WHERE category = 'horror'")
      result = cursor.fetchall()
  
      conn.close()
      return result