下面这段代码 ,st是怎么和student关联在一起的
class Student:
def __init__(self, name, grade, age):
self.name = name
self.grade = grade
self.age = age
def __repr__(self):
return repr((self.name, self.grade, self.age))
student_objects = [
Student('john', 'A', 15),
Student('jane', 'B', 12),
Student('dave', 'B', 10),
Student('jim', 'B', 12),
]
sorted(student_objects, key=lambda st: st.age)