problem when using deferred.defer()

[Aki Tanaka]

I use deferred.defer() following this tutorial http://www.gesource.jp/weblog/?p=3515


I got this error (PermanentTaskFailure: No module named werkzeug) every time i update my application.

1. 2014-06-12 20:33:28.457 /_ah/queue/deferred 200 2454ms 0kb AppEngine-Google; (+http://code.google.com/appengine) module=default version=4

   See details

   0.1.0.2 - - [12/Jun/2014:04:33:28 -0700] "POST /_ah/queue/deferred HTTP/1.1" 200 84 "http://xxxx.appspot.com/xxx" "AppEngine-Google; (+http://code.google.com/appengine)" "xxxx.appspot.com" ms=2454 cpu_ms=0 cpm_usd=0.000009 queue_name=default task_name=9522964183559634855 pending_ms=358 app_engine_release=1.9.6 instance=00c61b117c63796e856d922c42dcefcd3dd5ed

2. I 2014-06-12 20:33:28.139

   X-Appengine-Taskretrycount:0, X-Appengine-Tasketa:1402572805.7151, X-Appengine-Taskname:9522964183559634855, X-Appengine-Taskexecutioncount:0, X-Appengine-Queuename:default, X-Appengine-Current-Namespace:, X-Appengine-Country:ZZ

3. E 2014-06-12 20:33:28.452

   Permanent failure attempting to execute task
   Traceback (most recent call last):
     File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/deferred/deferred.py", line 309, in post
       self.run_from_request()
     File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/deferred/deferred.py", line 304, in run_from_request
       run(self.request.body)
     File "/base/data/home/runtimes/python27/python27_lib/versions/1/google/appengine/ext/deferred/deferred.py", line 144, in run
       raise PermanentTaskFailure(e)
   PermanentTaskFailure: No module named werkzeug