input: def print_grade_table(students):
      """
      Prints a formatted table of grades for a given set of students.
      
      >>> print_grade_table([{'name': "John", 'grade': 92}, {'name': "Alice", 'grade': 95}, {'name': "Bob", 'grade': 87}])
      Name   Grade
      -------------
      John   92
      Alice  95
      Bob    87
      """
output:     print("Name   Grade")
      print("-------------")
      for student in students:
          print(f"{student['name']:<6} {student['grade']}")