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 as input, where each tuple contains a student's name and their corresponding marks. If the input list is empty, the function should return an empty dictionary.
  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_list):
      return {name: marks for name, marks in student_list}