如何在脚本中使用导入django环境？

import os
if __name__ == '__main__':
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'dd85.settings')
　　#这句直接去wsgi.py中拷贝过来即可
    import django
    django.setup()

    from app03 import models

    student_list=models.Student.objects.all()
    for student in student_list:
        print(student.sex)
        #只要写了choice，配好了关系,该对象就会有个get_字段名_display（）的方法
        print(student.get_sex_display())
　　　　#本身choice只会显示数字 display 帮我们显示数字所对应的值

class Student(models.Model):
    choice_sex=((1,'男'),(1,'女'),(3,'人妖'))
    name=models.CharField(max_length=32)
    sex=models.SmallIntegerField(choices=choice_sex,default=1)
    # hobby=models.CharField(choices=[('1','篮球'),('2','足球')])
    age=models.IntegerField()

from app03 import models
from rest_framework import serializers

class StudentSerializer(serializers.ModelSerializer):
    sex=serializers.CharField(source='get_sex_display')
    class Meta:
        model =models.Student
        fields = '__all__'