实现对学生的成绩排序(取用字典的内容时要用[])
#怎样实现对学生的成绩排序
student=[
{"sno":101,"name":"zhnagsan","grade":88},
{"sno":102,"name":"wangwu","grade":78},
{"sno":103,"name":"xiaoliu","grade":90},
{"sno":104,"name":"mingming","grade":43},
]
student_sort=sorted(student,
key=lambda x#字典中的每个元素: x["grade"]#返回值，根据grade进行排序,
reverse=True#降序)
print(f"old_grade{student}\nsort_grade{student_sort}")