'import pyhrv' gets 'no module tkinter error'

[ChaeYeon01]

Chaquopy version

15.0

Devices or emulators where the issue happens

Relevant parts of your code

python script
import cv2
import numpy as np
import time
import pyhrv

build.gradle
chaquopy{
defaultConfig {
version = "3.8"
pip{
install("opencv-python")
install("numpy")
install("spectrum")
install("scipy")
install("pyhrv")
}
}

Describe your issue

I need to import pyhrv.
but when I import pyhrv, I get
com.chaquo.python.PyException: ModuleNotFoundError: No module named 'tkinter'
(Even if I don't put any funtion of pyhrv, just only import pyhrv, it says same error)

I know chaquopy doesn't support tkinter.
But I don't need to use tkinter. I don't use and write it anywhere.
Is pyhrv using tkinter??? Is pyhrv related to tkinter?

Why does pyhrv out tkinter error although I don't use tkinter?
And how can I use pyhrv without tkinter error?

[mhsmith]

Please post the full stack trace, as described at https://stackoverflow.com/a/23353174.

[ChaeYeon01]

Oh I'm so sorry..!

here:

[mhsmith]

I suggest you report this to the biosppy project, and request them to tolerate the situation where tkinter is unavailable.

Unfortunately I can't see any simple workaround. Adding a fake tkinter module to sys.modules isn't enough, because biosppy/inter_plotting/ecg.py also unconditionally imports matplotlib.backends.backend_tkagg, which itself imports many other tkinter modules and classes.