Datastore Viewer Error

key ="agpoZWxsb3dvcmxkcgsLEgRCbG9nGPckDA"
r = db.get(key)

is OK.

But...
Google\google_appengine\google\appengine\ext\admin\__init__.py", line 542, in input_field
if len(sample_value) > 255 or sample_value.find('\n') >= 0:
TypeError: object of type 'NoneType' has no len()

Odd behaviour in admin interface
http://groups.google.com/group/google-appengine/browse_thread/thread/29cd28daea3c37d3?fwc=1

google.appengine.api.datastore

cccwiki サンプルではPage オブジェクトを作成している
　
　この内容は　Datastore Viewerでも参照することができる。
























　その基本動作の確認

c:/Program Files/Google/google_appengine/google/appengine/api/datastore.py

import os
from google.appengine.api import datastore
from google.appengine.api import datastore_types

name = 'test'
entity = datastore.Entity('Page')
entity['name'] = name

query = datastore.Query('Page')
query['name ='] = name
entities = query.Get(1)
print >> sys.stdout, len(entities)
print >> sys.stdout, entities[0]
print >> sys.stdout, entities[0]['user']
print >> sys.stdout, entities[0].key()
print >> sys.stdout, entities[0].key().id()
------
1
{u'content': u'<h1>test</h1>', u'user': users.User(email='test@example.com'), u'modified': datetime.datetime(2008, 5, 9, 14, 41, 30, 62000), u'name': u'test', u'created': datetime.datetime(2008, 5, 9, 14, 41, 30, 62000)}
test@example.com
agpoZWxsb3dvcmxkcgsLEgRQYWdlGJQBDA
148