i.MX Processorsのトピックimport tkinter fails in IMX8

import tkinter fails in IMX8

nishitha_a — Wed, 07 Oct 2020 08:23:46 GMT

Hi I am working on IMX8mq evaluation kit. The tkinter module import fails in imx

>>> import tkinter
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.7/tkinter/__init__.py", line 36, in <module>
import _tkinter # If this fails your Python may not be configured for Tk
ModuleNotFoundError: No module named '_tkinter'

The yocto project version is 3.0 zeus.

distro = fsl-imx-xwayland

python3-tkinter is already in the image.

How can I resolve this ?

Re: import tkinter fails in IMX8

Bio_TICFSL — Wed, 07 Oct 2020 13:11:35 GMT

Hello nishita_a,

The reason is that tk is not in oe-core (even though tcl is), so the
_tkinter python extension (compiled c code) is disabled.[1]

http://layers.openembedded.org/layerindex/branch/master/recipes/?q=tkinter

Regards

Re: import tkinter fails in IMX8

nishitha_a — Wed, 07 Oct 2020 13:35:19 GMT

Hi,

Thank you for the quick reply.

So is there any way to enable _tkinter extension?

The link provides directs to blank page in openembedded site.

Re: import tkinter fails in IMX8

toanjunifer — Thu, 08 Oct 2020 09:52:18 GMT

The Tkinter library is built-in with every Python installation.

The most probably you are typing the command wrong. It should be:

import Tkinter as tk

Note the capital T at the beginning of Tkinter.

For Python 3,

import tkinter as tk

Re: import tkinter fails in IMX8

sebastiansuesen — Mon, 22 Feb 2021 13:07:22 GMT

Hello,

I have the same problem.

Has someone a solution?

How can I fix this problem.

Re: import tkinter fails in IMX8

may_snow — Fri, 27 May 2022 04:30:56 GMT

I had the same problem,and finally I solved it.

I referred to the following,
<Re: [yocto] Enabling tk for Python tkinter module (mail-archive.com)>
And I added

PACKAGECONFIG:append:pn-python3 = “ tk”

to my local.conf file.

After that,I had the error,
[_tkinter.TclError: no display name and no $DISPLAY environment variable]
so I add following, to my python script,and I can display my GUI.

---

if os.environ.get('DISPLAY','') == '':
print('no display found. Using :0.0')
os.environ.__setitem__('DISPLAY', ':0.0')
---