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学习Django objects.filter,轻松提升数据库查询效率?

GG网络技术分享 2025-11-13 03:19 2


python from django.db import models

class Author: name = models.CharField

class Book: title = models.CharField price = models.DecimalField author = models.ForeignKey

lowpricebooks = Book.objects.filter

booktitle = 'Django for beginners' booksby_title = Book.objects.filter

authorname = 'John Smith' booksby_author = Book.objects.filter

bookswithdjango = Book.objects.filter

for book in lowpricebooks: print

for book in booksbytitle: print

for book in bookswithdjango: print

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