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淦Teacher为模板(model)Teacher.objects.all() #查询全部Teacher.objects.get(no=selected_no) #select...where 查询单个Teacher.objects.filter(subject=subject) #查询负责此课程的全部老师Teacher.objects.all().only('name','intro','gcount','bcount','subject').select_related

django中已经在虚拟环境下了出现ModuleNotFoundError: No module named 的错误,而且环境还是用的windows系统python路径

paginator简单介绍paginator是django自带的分页工具官网例子from django.core.paginator import Paginator.objects = ['john', 'paul', 'george', 'ringo']p = Paginator(objects, 2) #定义Paginator对象>>> p.count #2 =>因为每页2个数据>>> p.num_pages #2 =&

setting.py 加上STATICFILES_DIRS后一直报Exception has occurred: SyntaxError

django的坑 inspectdb 问题:排查结果:解决方法答案发现处:问题:学习github上大佬的python教程(42天)时遇到的问题django中,为了创建models.pypython manage.py inspectdb > polls/models.pypython manage.py shell执行这句后就出现了Traceback (most recent call last): File "manage.py", line 20, in <module

来源def bv2av_or_av2bv(number): table = 'fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF' tr = {} for i in range(58): tr[table[i]] = i s = [11,10,3,8,4,6] xor = 177451812 add = 8728348608 def dec(number):