無法導入ndb

我剛剛聯繫了Google App Engine。我已經加入了一個項目，沒有關於它如何工作的線索，所以如果這個問題看起來很愚蠢，我很抱歉。無法導入ndb

我的問題是，看着日誌，它說它不能導入ndb。我已經查找了一下，發現這應該在谷歌應用程序引擎的1.6.4版本中默認存在。

我試圖從控制檯導入它，它也不起作用。我安裝的Python和谷歌應用程序引擎是乾淨的，我今天都做了。

我該怎麼辦？

我正在使用Python 2.7和谷歌應用程序引擎1.6.4的Windows工作。

這是代碼行給我的問題：

from wtforms.ext.appengine.ndb import model_form

以下是錯誤：

INFO 2012-04-10 19:44:34,582 dev_appserver.py:2884] "GET/ HTTP/1.1" 500 - ERROR 2012-04-10 19:47:05,239 wsgi.py:189] Traceback (most recent call last): File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 187, in Handle handler = _config_handle.add_wsgi_middleware(self._LoadHandler()) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 236, in _LoadHandler import(cumulative_path) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1850, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1722, in FindAndLoadModule description) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1665, in LoadModuleRestricted description) File "C:\Users\chobeat\workspace\pappa Mi\py\main.py", line 38, in from py.comments import * File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1850, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1722, in FindAndLoadModule description) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1665, in LoadModuleRestricted description) File "C:\Users\chobeat\workspace\pappa Mi\py\comments.py", line 20, in from py.form import IspezioneForm, NonconformitaForm, DietaForm, NotaForm File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1850, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1722, in FindAndLoadModule description) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1665, in LoadModuleRestricted description) File "C:\Users\chobeat\workspace\pappa Mi\py\form.py", line 6, in from wtforms.ext.appengine.ndb import model_form ImportError: No module named ndb

來源

2012-04-10 Chobeat

您需要向我們展示從日誌中的堆棧跟蹤 - 不要讓我們猜測你在那裏看到什麼。 – 2012-04-11 01:51:07

您需要導入這樣的：

from google.appengine.ext import ndb

如果你只是說import ndb你錯過了s導入路徑信息。不要害怕將有問題的代碼複製到您的問題中。通常，這將提供重要線索。

更新： WTForms不包含在AppEngine SDK中。您需要在您的系統上登錄install it。

來源

2012-04-10 19:30:31

mmm ok，它在控制檯中工作，但stil在主項目中不起作用。我已經從存儲庫下載它，它應該工作。無論如何，我要編輯主帖。 – Chobeat 2012-04-10 19:37:36

@Adam他不是試圖導入ndb，而是從wtforms導入model_form。它沒有一個ndb包。 – aschmid00 2012-04-11 14:33:18

@ aschmid00，是的，我明白了。他在我回答了這個問題之後補充了一大堆信息，並且我更新了它以反映這一點。我懷疑他沒有安裝WTForms。 – 2012-04-11 15:05:28

from wtforms.ext.appengine.ndb import model_form

無法正常工作。 wtforms沒有ndb包。它應該是：

from wtforms.ext.appengine.db import model_form

來源

2012-04-11 13:20:46 aschmid00

回答

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