input: Write a function to create a python dictionary containing student names and marks as key-value pairs. The function should return the dictionary with the given pairs.
  
  
  assert create_student_marks({ 
      "John" : 90, 
      "Levi" : 85, 
      "Jill" : 95, 
      "Sara" : 75
  })=={ 
      "John" : 90, 
      "Levi" : 85, 
      "Jill" : 95, 
      "Sara" : 75
  }
  
output: def create_student_marks(student_marks):
      return student_marks