input: Write a function to construct a Python dictionary containing student names and marks as key-value pairs. The function should accept a list of tuples where each tuple contains a student's name and their corresponding mark. If the input list is empty, the function should return an empty dictionary.
  
  def construct_student_marks(student_tuples):
      student_marks = {}
      for name, mark in student_tuples:
          student_marks[name] = mark
      return student_marks
  
  assert construct_student_marks([("John", 90), ("Levi", 85), ("Jill", 95), ("Sara", 75)])=={ 
      "John" : 90, 
      "Levi" : 85, 
      "Jill" : 95, 
      "Sara" : 75
  }
  assert construct_student_marks([])=={}
  
output: def construct_student_marks(student_tuples):
      student_marks = {}
      for name, mark in student_tuples:
          student_marks[name] = mark
      return student_marks