如何与Django SQLite数据库中的整型字段进行交互？

from django.db import models

class Product(models.Model):
    name = models.CharField(max_length=100)
    price = models.IntegerField()  # 整型字段

# 创建一个新的Product实例并保存到数据库
product = Product(name='Example Product', price=199)
product.save()

# 获取所有产品的价格
products = Product.objects.all()
for product in products:
    print(product.price)

# 根据条件过滤
expensive_products = Product.objects.filter(price__gt=100)

# 更新特定产品的价格
product = Product.objects.get(id=1)
product.price = 299
product.save()

# 或者使用update方法批量更新
Product.objects.filter(price__lt=100).update(price=models.F('price') + 50)

# 删除特定产品
product = Product.objects.get(id=1)
product.delete()

# 或者使用delete方法批量删除
Product.objects.filter(price__lt=50).delete()

try:
    product.price = int(input("Enter new price: "))
except ValueError:
    print("Please enter a valid integer.")

python manage.py makemigrations
python manage.py migrate