Develop Reference

The managed object is not valid - Dynamo Crashes

The following error in Dynamo is bugging me since many hours.
Warning:
IronPythonEvaluator.EvaluateIronPythonScript operation failed.
Traceback (most recent call last):
File " < string > ", line 33, in < module>
Exception: The managed object is not valid.
I’m not sure why the error has occur would appreciate if someone share its solution with me. Thank you

import clr
clr.AddReference('ProtoGeometry')
import Autodesk.DesignScript.Geometry
# Import Element wrapper extension methods
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)
# Import geometry conversion extension methods
clr.ImportExtensions(Revit.GeometryConversion)
# Import DocumentManager and TransactionManager
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
app = uiapp.Application
# Import RevitAPI
clr.AddReference("RevitAPI")
from Autodesk.Revit.DB import *
import System
from System import Array
from System.Collections.Generic import *
import sys
pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib'
sys.path.append(pyt_path)
The above are my standard imports while working with Dynamo/Revit API. It has been working for me for a while.
In all honesty I wish I had an "actual" answer why your script is not working. The only thing that is different than mine, is order in which you reference certain things. That should have no effect on their validity. It's Dynamo though, and it's very capricious.

AttributeError: 'module' object has no attribute 'ZKLib'

I'm trying to connect to biometric device. I have installed 'Zklib' using (Pip). My code as follows
`import sys
import zklib
import time
from zklib import zkconst
zk = zklib.ZKLib("192.168.0.188", 4370)
ret = zk.connect()
print "connection:", ret`
When I execute this, I get an error
AttributeError: 'module' object has no attribute 'ZKLib'
Help me to run this code successfully.

Try the following instead:
import sys
import time
from zklib import zklib, zkconst
zk = zklib.ZKLib("192.168.0.188", 4370)
ret = zk.connect()
print "connection:", ret
The ZKlib class is in zklib.zklib not zklib. It appears that there is a typo in the Getting Started section of their GitHub page (or they expect you to be in the zklib directory when running your code?).

Python: AttributeError: 'module' object has no attribute, which is untrue

What I want to do:
I want to import a python module (pocketsphinx) and use the output from the Decoder attribute. However when I try to use it, I'm informed that module attribute 'Decoder' doesn't exist.
decoder = Decoder(configSwitches)
It does exist, though, which is what makes it so strange.
What I've done so far:
When I pull up a python console and input import pocketsphinx, it imports without any issue. Running pocketsphinx.file returns:
'/usr/local/lib/python2.7/dist-packages/pocketsphinx-0.0.8-py2.7-linux-armv7l.egg/pocketsphinx/__init__.pyc'
Looking in '/usr/local/lib/python2.7/dist-packages/pocketsphinx-0.0.8-py2.7-linux-armv7l.egg/pocketsphinx/__init__.py', I see: from pocketsphinx import * and that's it.
When I go back up to /usr/local/lib/python2.7/dist-packages/pocketsphinx/pocketsphinx.py and open it in a text editor, I see that pocketsphinx.py does indeed have a Decoder class with a healthy number of defined methods.
My Ask:
What other steps can I take to diagnose what's wrong with my use of the pocketsphinx module?
Here's the example code I was trying to run before really digging into the project:
import pocketsphinx
hmmd = r"/home/michael/Desktop/sphinxASR/pocketsphinx-5prealpha/model/en-us/en-us"
lmdir = r"/home/michael/Desktop/sphinxASR/pocketsphinx-5prealpha/model/en-us/en-us.lm.bin"
dictp = r"/home/michael/Desktop/sphinxASR/pocketsphinx-5prealpha/model/en-us/cmudict-en-us.dict"
fileName = r'/home/michael/Desktop/sphinxASR/voice_message.wav'
if __name__ == "__main__":
wavFile = open(fileName, "rb")
speechRec = pocketsphinx.Decoder(hmm=hmmd, lm=lmdir, dictionary=dictp)
wavFile.seek(44)
speechRec.decode_raw(wavFile)
result = speechRec.get_hyp()
print(result)
Stack trace:
Traceback (most recent call last):
File "/home/michael/PycharmProjects/27test/getHypTest.py", line 14, in <module>
speechRec = pocketsphinx.Decoder(lm=lmdir, dictionary=dictp)
AttributeError: 'module' object has no attribute 'Decoder'

By looking at the pocketsphinx example code, it seems that your import should be:
from pocketsphinx.pocketsphinx import *
My first step diagnosing this issue would be to type the following, so that I can see what is being imported:
import pocketsphinx
dir(pocketsphinx)

You should import Decoder from pocketsphinx.
Instead of
import pocketsphinx
try:
from pocketsphinx.pocketsphinx import Decoder

Python script for Blender failed

In Blender 2.62 I was using this script to display a point:
import bpy
from bpy.props import FloatVectorProperty, IntProperty, FloatProperty
from add_utils import AddObjectHelper, add_object_data
data0=[]
data0.append((float(69.3456), float(36.4562), float(26.8232)))
me0 = bpy.data.meshes.new( name = "point cloud0")
me0.from_pydata( data0, [], [] )
me0.update()
add_object_data(bpy.context, me0, [])
After having updated to Blender 2.67a the execution returns a failure and the following error is reported in the console window:
ImportError: No module named 'add_utils'
Do you have any clue why this should not work anymore?
Thank you :)

Add the missing bpy_extras import at the start of the script
import bpy
import bpy_extras
from bpy.props import FloatVectorProperty, IntProperty, FloatProperty
from bpy_extras import object_utils.object_data_add
from bpy_extras import AddObjectHelper
The API for add_object_data appears to have changed to object_data_add so you'll need to change that in the script too.
object_data_add(bpy.context, me0, [])

ImportError when attempting to mock a module

I have a module that I am testing that depends on another module that won't be available at the time of testing. To get around this, I wrote (essentially):
import mock
import sys
sys.modules['parent_module.unavailable_module'] = mock.MagicMock()
import module_under_test
This works fine as long as module_under_test is doing one of the following import parent_module, import parent_module.unavailable_module. However, the following code generates a traceback:
>>> from parent_module import unavailable_module
ImportError: cannot import name unavailable_module
What's up with this? What can I do in my test code (without changing the import statement) to avoid this error?

Alright, I think I've figured it out. It appears that in the statement:
from parent_module import unavailable_module
Python looks for an attribute of parent_module called unavailable_module. Therefore, the following set up code fully replaces unavailable_module within parent_module:
import mock
import sys
fake_module = mock.MagicMock()
sys.modules['parent_module.unavailable_module'] = fake_module
setattr(parent_module, 'unavailable_module', fake_module)
I tested the four import idioms of which I am aware:
import parent_module
import parent_module.unavailable_module
import parent_module.unavailable_module as unavailabe_module
from parent_module import unavailable_module
and each worked with the above set up code.