peewee

peewee - brincar com um ORM.
definições do modelo e da criação do esquema
cheira como Django:
peewee importação
Blog classe (peewee.Model):
& Nbsp; title = peewee.CharField ()
& Nbsp; def __unicode __ (self):
& Nbsp; self.title retorno
classe Entry (peewee.Model):
& Nbsp; title = peewee.CharField (max_length = 50)
& Nbsp; content = peewee.TextField ()
& Nbsp; pub_date = peewee.DateTimeField ()
& Nbsp; blogue = peewee.ForeignKeyField (Blog)
& Nbsp; def __unicode __ (self):
& Nbsp; return '% s:% s'% (self.blog.title, self.title)
criar algumas tabelas:
>>> Blog.create_table ()
>>> Entry.create_table ()
chaves estrangeiras funcionam como Django
& Nbsp; >>> b = Blog (title = "Big Adventure de Peewee")
& Nbsp; >>> b.save ()
& Nbsp; >>> e = Entry (title = "? O grande filme que nunca", content = "Sim!", Blogue = b)
& Nbsp; >>> e.save ()
& Nbsp; >>> e.blog
& Nbsp;
& Nbsp; >>> for e em b.entry_set:
& Nbsp; ... print e.title
& Nbsp; ...
& Nbsp; O grande filme de sempre?
consulta bizarro
consultas vêm em quatro sabores (select / update / insert / delete):
>>> For i in xrange (50):
... B = Blog (title = 'blog-% d'% i)
... B.save ()
... Para j em xrange (i):
... E = Entry (title = 'entry-% d'% j, do blog = b)
... E.save ()
...
>>> [Obj.title para obj em Blog.select (). (Onde title__contains = '0')]
[U'blog-0 ', u'blog-10', u'blog-20 ', u'blog-30', u'blog-40 ']
>>> [Obj.title para obj em Blog.select (). Paginar (3, 10)]
[U'blog-20 ', u'blog-21', u'blog-22 ', u'blog-23', u'blog-24 ',
& Nbsp; u'blog-25 ', u'blog-26', u'blog-27 ', u'blog-28', u'blog-29 ']
>>> [Obj.title para obj em Blog.select (). Join (Entry) .onde (title__contains = "entry-45 ')]
[U'blog-46 ', u'blog-47', u'blog-48 ', u'blog-49']
>>> Blog.select (). Join (Entry) .onde (title__contains = "entry-29 '). Count ()
20

Requisitos :

• Python