input: Write a function to construct a python dictionary containing student names and marks as key-value pairs. The function should take a list of tuples where each tuple contains a student name and their corresponding marks. If the input list is empty, the function should return an empty dictionary.
  
  def create_student_marks(student_tuples):
      if not student_tuples:
          return {}
      return {name: marks for name, marks in student_tuples}
  
  assert create_student_marks([("John", 90), ("Levi", 85), ("Jill", 95), ("Sara", 75)]) == {"John": 90, "Levi": 85, "Jill": 95, "Sara": 75}
  assert create_student_marks([]) == {}
  assert create_student_marks([("Alice", 88), ("Bob", 78)]) == {"Alice": 88, "Bob": 78}
output: def create_student_marks(student_tuples):
      if not student_tuples:
          return {}
      return {name: marks for name, marks in student_tuples}