题
在问题基于线程时,因为我观察到风暴让我再利用我的SQL-模式。
你怎么能在风暴解决以下错误消息?
在代码是基于Jason的答案,并在风暴手册。
import os, pg, sys, re, psycopg2, storm
from storm.locals import *
from storm import *
class Courses():
subject = Unicode()
database = create_database("postgres://naa:123@localhost:5432/tk")
store = Store(database)
course = Courses()
course.subject = 'abcd'
store.add(course)
它给你
Traceback (most recent call last):
File "<stdin>", line 13, in <module>
File "/usr/lib/python2.6/dist-packages/storm/store.py", line 245, in add
obj_info = get_obj_info(obj)
File "/usr/lib/python2.6/dist-packages/storm/info.py", line 40, in get_obj_info
obj_info = ObjectInfo(obj)
File "/usr/lib/python2.6/dist-packages/storm/info.py", line 162, in __init__
self.cls_info = get_cls_info(type(obj))
File "/usr/lib/python2.6/dist-packages/storm/info.py", line 51, in get_cls_info
cls.__storm_class_info__ = ClassInfo(cls)
File "/usr/lib/python2.6/dist-packages/storm/info.py", line 69, in __init__
raise ClassInfoError("%s.__storm_table__ missing" % repr(cls))
storm.exceptions.ClassInfoError: <type 'instance'>.__storm_table__ missing
此建议,我认为某些模块被丢失。存在风暴没有模块instance
。
解决方案
我就离开了连接细节,因为我并不十分熟悉的Postgres。
from storm.locals import *
class Courses(object):
__storm_table__ = 'courses'
pkey = Int(primary=True)
course_nro = Unicode()
course = Courses()
course.course_nro = 'abcd'
store.add(course)
store.commit()
当然,如果你想要做的构造和初始化在同一行,你可以使用 pysistence 的 expandos将:
from storm.locals import *
from pysistence import Expando
class Courses(Expando):
__storm_table__ = 'courses'
pkey = Int(primary=True)
course_nro = Unicode()
course = Courses(course_nro='abcd')
store.add(course)
store.commit()
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