input: from typing import List, Dict
  
  def print_grade_table(students: List[Dict[str, str]]) -> None:
      """
      Print 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']:<12}{student['grade']}")