'module' object has no attribute

[Jason Huang]

Hi all,

I got stuck at the beginning of creating a UI interface and couldn't figure out what was missing.

ENV: Maya 2018 update 2, Windows 10.

script name: assetManager.py (saved in Maya 2018 scripts folder)

from Qt import QtWidgets, QtCore, QtGui
import pymel.core as pm

class ObjectManager(QtWidgets.QDialog):
    def __init__(self):

        super(ObjectManager, self).__init__()

def showUI():
    ui = ObjectManager()
    ui.show()
    return ui

In Maya script editor: (python panel)

import assetManager
reload(assetManager)

ui = assetManager.showUI()

Maya errors out: 

# Error: AttributeError: file <maya console> line 1: 'module' object has no attribute 'showUI' #

I am following a course and the same code demo-ed in the course video works fine in teacher's Maya session.

Thanks,

Jason

[Marcus Ottosson]

Try print(assetManager) to find out where the file actually resides on disk, and make sure it’s the file you expect.

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[Jason Huang]

Thanks Marcus. Just tried that and apparently it's executing from the Maya 2017 scripts folder

print(assetManager)
<module 'assetManager' from 'C:\Users\jason\Documents\maya\2017\scripts\assetManager.pyc'>

If I remove the assetManager.py from Maya 2017 scripts folder, everything is fine.
Is there a way to tell Maya 2018 to execute from the 2018 script folder instead of the 2017?

[Marcus Ottosson]

Yes, try something like this.

import sys
sys.path.insert(0, r"C:\Users\jason\Documents\maya\2018\scripts")
import assetManager

sys.path is a list of all directories Python will look for modules, prior to importing it for the first time. It’s a somewhat forceful way of achieving it however, it’s likely something is not right with your setup.

Have a look at what your PYTHONPATH looks like.

import os
print(os.getenv("PYTHONPATH"))

PYTHONPATH (may) contain paths that is eventually parsed into sys.path.

If it contains anything, then that is where Python will look for your modules. Next is having a look at your maya.env file of your user directory, that can safely be empty. If neither of those have any content, then something more murky is happening. Maya should be able to find scripts from its own scripts directory without any interference. If all else fails, remove/move your Documents\maya directory elsewhere, such that Maya can create a new one without any customisations.

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[Jason Huang]

Thank you for the tips Marcus. As checking the PYTHONPATH, I guess the problem was I have an older version of assetManager.py saved in the 2017 scripts folder and that directory is part of the PYTHONPATH directories Maya will look for modules. Maya 2018 might parse the 2017 scripts directory and execute the older version of assetManager.py first.

cheers,

Jason

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[Marcus Ottosson]

Ah, well you can spot the order in which directories are evaluated by looking at the order of paths in sys.path. You should find that the 2017 folder is before the 2018 folder. This shouldn’t be Maya’s doing, but rather something happening elsewhere. 2018 shouldn’t know about 2017, nor any other version before it.

Ps. I use the word “should” rather than “is” because sometimes Maya simply goes bananas. :)

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[Jason Huang]

ha...you are right. The 2017 scripts directory indeed shows up in front of the 2018 one based on the order listed. Seems like my Maya 2018 is going a bit bananas... :) 

Now I know what's going on and a solution. Thank you, Marcus!

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[zeth willie]

Hey Jason-

I've attached a script that I wrote a while back that may be useful for stuff like this. Put it in your scripts folder (instructions for executing in the header) and it will help manage your python paths (add, remove, reorder). The first tab lets you save/load paths for quickly loading common paths you use, the second tabs show the item in your python path in order and lets you change a few things. Nothing too fancy, but might be helpful for seeing what's going on.

I assume dropping a file here isn't an issue. I'm sure I have it handy online (somewhere other than in a big repo on github) if this doesn't work

Zeth

[Jason Huang]

Hey Zeth, 

Sorry for the late response. Much appreciated for the attached script. It seems to be super handy tool. I am able to download the attachment just fine. Will definitely give that a go and let you know.

cheers,

Jason

[Jason Huang]

Works like a charm, Zeth. I am able to add, delete, move order of python paths in a nice little GUI. Awesome! Thanks so much!

-Jason

On Wednesday, February 21, 2018 at 12:43:07 PM UTC-8, zeth willie wrote:

[zeth willie]

glad it helped!