input: Write a function to construct a dictionary containing student names and marks as key-value pairs. The function should take a list of tuples, where each tuple contains a student's name and their corresponding marks. The function should return the constructed 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([("Alice", 88), ("Bob", 77)])=={ 
      "Alice" : 88, 
      "Bob" : 77
  }
  assert construct_student_marks([])=={}
output: def construct_student_marks(student_tuples):
      return {name: marks for name, marks in student_tuples}