yxteagle的博客

django.contrib.gis下 model声明中的差异 # Overrides Manager to return Geographic QuerySets objects = GeoManager() loc = models.PointField(srid=4326, db_index=True) 坐标声明 Point(123.456, 34,567) 比较空间距离

虚拟环境:django,gevent,celery 项目根目录下celery_porject import os from celery import Celery os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project.settings') app = Celery('project',

import random random_uuid = ''.join([random.choice('0123456789abcdef') for _ in range(32)]) 采用filter比较uuid算法随机取一条记录比order_by('?')[:1]方法效率上具有优势