student={
    'Alice':{"Id":"id001","age":17,"grade":'A' },
    'Bob':{"Id": "id002","age":18,"grade":'B'},
    'Emma':{"Id": "id003","age":19,"grade":'C'},
    'Clair':{"Id":"id004", "age":20,"grade":'D'},
    'DAN':{"Id": "id005", "age":21,"grade ": 'E'}
    }
print student['Alice']['age']
print type(student['Alice']['Id'])
