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Why am I seeing "No module named '_tkinter" when I deploy django to heroku?

django works well on my local machine. But, when I deploy it to heroku, I see "ModuleNotFoundError" "No module named '_tkinter'". Though, I never imported "_tkinter" or "tkinter" in my code. Your help will be appreciated. Thank you.
ModuleNotFoundError at /
No module named '_tkinter'
Request Method: GET
Request URL: https://howididit.herokuapp.com/
Django Version: 4.0.6
Exception Type: ModuleNotFoundError
Exception Value:
No module named '_tkinter'
Exception Location: /app/.heroku/python/lib/python3.10/tkinter/init.py, line 37, in
Python Executable: /app/.heroku/python/bin/python
Python Version: 3.10.5
Python Path:
['/app/.heroku/python/bin',
'/app',
'/app/.heroku/python/lib/python310.zip',
'/app/.heroku/python/lib/python3.10',
'/app/.heroku/python/lib/python3.10/lib-dynload',
'/app/.heroku/python/lib/python3.10/site-packages']

If you don't use Tkinter, just remove it from /forms.py. otherwise it'll be imported.
If you want to use tkinter,then consider the below process
please try adding tkinter to your requirements.txt. If it fails, even after that, check if you have added Python buildpack. If both the cases pass, try shelling into your Heroku instances and run the following command:
sudo apt install python3-tk
This will install Tkinter library in your instance of Heroku. That will resolve your error.

I found out these from pyexpat import model from turtle import title from attr import fields where imported in my forms.py. After deleting them, The problem was solved. Again, thank you all guys for your time, I really appreciate it.

Okay so for anyone looking at this in the future and banging their head against the desk...this is what worked for me:
I started with a new Hello World app and started adding bits of my original code until i got to the error
found out that one of the modules I was using : icu, was using tkinter and i needed to install the Pyicu module instead
pip installed directly into heroku bash console instead of through my app
None of the answers i found online had worked for me, and I think its because this error isnt from having tkinter directly in your app, but from another module thats calling it.
When in doubt do what I did and start a new project from scratch and add chunks of code until you get the error to see which module is creating it

Dont forget to change DEBUG to False in your settings file

ImportError: No module named psycopg2.extensions

I am trying to create an app using GeoDjango and I am completely new to this. After some (failing) attempts at making SpatiaLite work, I decided to try out PostgreSQL. I am following the GeoDjango tutorial, and I am stuck at the python manage.py sqlall world line. When I ran that command (or python manage.py syncdb), I got ImportError: No module named psycopg2.extensions. I looked online and realized I needed to install psycopg2, which I did via MacPorts with sudo port install py27-psycopg2. I reran the program and got the same error. I restarted my computer and ran the program again, and still got the same error. Does anyone know anything else that might have caused this?
Thanks!
PS. If anyone cared to know, I was stuck at the same command while testing out SpatiaLite. I consistently received the 'DatabaseOperations' object has no attribute 'geo_db_type'error. I looked around the internet, didn't find any answer and decided to move on for the time being and maybe try again later.
PSS. I am working on Mac OS X 10.7.5

Djangobb problem

I've installed Djangobb app on my server (Debian, mod_python) by cloning original source. The only things I've changed is database options in settings.py. All needed components are installed - syncdb query was executed right.
But, when I'm trying to enter on my forum, it returns me error:
ImproperlyConfigured: Error importing middleware django_authopenid.middleware: "No module named djangobb_forum.subscription"
I've checked - djangobb_forum/subscription.py exist, so I don't know what can be wrong.
Maybe someone had problems like that and know how to fix it?
Sorry for my english.

There are two obvious reasons to why this might happen:
djangobb_forum is not on your Python path
There is no __init__.py in the djangobb_forum folder
If the code says from djangobb_forum import ... then you need to have the parent folder of djangobb_forum on your Python path.

Mod_Python + Django library import issue

I recently had a site that was running perfect for months, all of a sudden it decided to dump itself for no approximate reason.
I am running django + mod_python + apache, and the system decided it was time to start ignoring the import of the pycurl library, my intial first thought was that somehow the library had become corrupted, or the paths were uncached by apache or mod_python.
After checking the paths, symbolic links, permissions and reinstalling the exact build of pycurl I am still recieving the same error. The strange thing is, is that I can load the library within python itself and run tests with no issues, but not within mod_python. I know for a fact that the paths are correctly pointed as I have checked them numerous times and updated the system cache accordingly.
Django now will not load or throw any errors, nor will apache log anything if I try and import the library it will just silently fail... I have been exploring this issue for 2 days now and have not come up with anything.
Any help would be greatly appreciated.
Just to add some here, the server has not been touched in any way since the final revision and launch.
I have checked every log that would indicate some type of attack against the server and there is nothing, the only thing that exists is request from my hosting provider which is where the error in question first started to appear.
Also the similar issue: stackoverflow.com/questions/1099981/… - does not work in this case.
Incase anyone is wondering the versions are as follows
Python 2.4.3
Mod_Python 3.2.8
Apache 2.2.3
Redhat Red Hat Enterprise Linux Server release 5.4
Linux Kernal 2.6.18-128.7.1.el5 x86_64

If the problem is a failing import when running under Apache but the import works when running from your login shell, double-check that there isn't a directory/file permission problem with the failing module(s). They must be read-accessible and in some cases also execute-accessible from the user id that Apache is running under.

The httpd process could be running into the open file limit; see help ulimit in bash for the relevant option to change.

Well now ... I have debugged this issue ... and the answer is quite surprising.
R**kspace decided to do a few updates to the box, updating the dependent library in question and it caused the issues ... after reinstalling the library it would try to load the c module and it was not a comp version with the current pycurl ... and they couldn't figure this out themselves for 2 days.

Error running twisted application

I am trying to run a simple twisted application echo bot that metajack blogged about, everything looks like it is going to load fine, but at the very end I get an error:
2009/07/12 15:46 -0600 [-] ImportError: cannot import name toResponse
2009/07/12 15:46 -0600 [-] Failed to load application: cannot import name toResponse
Any ideas on what might be causing this?
I've not played with wokkel/twisted/python at all and dont know where to start to look.
It is worth nothing that I've tried another wokkel/twisted app and got this very same error.

This error is caused because I have an outdated version of Twisted. Off to find a way to update twisted itself as the installer doesnt seem to be doing the trick.

There's not really enough information to go on, but if I had to guess, I'd say that you've given your program the same name as one of the modules that it relies on. Try renaming it to anthonys_echo_bot.py and re-running it. Do this:
rm *.pyc
in the directory in which you're running it first.
If that doesn't help, you'll need to track down the piece of code that's trying import toResponse - is that all the error you get? No traceback, pointing to lines of code?