206-魔术方法：__dict__()

__dict__()方法的作用：

• 把对象转化为字典
• 把对象的属性转化为字典的键和值

例如，把学生信息的对象转成列表后保存成列表再保存到文件

from Student import Student

students = []

s1 = Student('ZhangSan', 23, '10086')
s2 = Student('LiSi', 24, '10010')

students.append(s1)
students.append(s2)

students = [i.__dict__ for i in students]
print(students)