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django 文件更新: 文件更新一定要放到最后,否则文件会丢失! 参考https://blog.csdn.net/weixin_33127753/article/details/88227832 from django.core.files.base import ContentFile file 阅读全文
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values_list("gender","id",flat=True) # 这样会报错,只能取一个字段 'flat' is not valid when values_list is called with more than one field. 另一张表通过related_name__属性名( 阅读全文