如何在我的Django模型中表示美国州？

from django.db import models

class State(models.Model):
    name = models.CharField(max_length=50)

    def __str__(self):
        return self.name

from django.db import models

class State(models.Model):
    STATE_CHOICES = (
        ('AL', 'Alabama'),
        ('AK', 'Alaska'),
        ('AZ', 'Arizona'),
        # 其他州的选项...
    )

    name = models.CharField(max_length=2, choices=STATE_CHOICES)

    def __str__(self):
        return self.get_name_display()