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']:<10}{student['grade']}")