论坛 › Python › django shell创建、取出、排序打印

231fds 发表于 2016-1-19 09:10:51

django shell创建、取出、排序打印

models.py

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from django.db import models
class Person(models.Model):
name=models.CharField(max_length=30)
age=models.IntegerField()
def __unicode__(self):
return self.name





./manage.py shell
Person.objects.order_by("id")
[<Person: lanny>, <Person: mxl>, <Person: wang>, <Person: zhang>, <Person: zhao>, <Person: li>]

#切片打印出列表

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Person.objects.order_by("id")[:1]
[<Person: lanny>]
Person.objects.order_by("id")[:2]
[<Person: lanny>, <Person: mxl>]





#倒序排列

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Person.objects.order_by("-id")[:2]
[<Person: li>, <Person: zhao>]
Person.objects.all()
[<Person: lanny>, <Person: mxl>, <Person: wang>, <Person: zhang>, <Person: zhao>, <Person: li>]





创建、查询

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Person.objects.create(name=lanny,age=23)
Person.objects.get(name="lanny")

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