failure in pixel_data_handlers\pylibjpeg_handler

[giveinput]

The problem
I'm trying to read a dicom-file, which is in JPEG Lossless syntax. Therefor I need the pylibjpeg-libjpeg module, which causes an error in the import from pydicom:

AttributeError: partially initialized module 'pydicom' has no attribute 'config' (most likely due to a circular import)

Full traceback:
Traceback (most recent call last): File "read_and_show_dicom.py", line 6, in <module> import pydicom File "C:\...\env38\lib\site-packages\pydicom\__init__.py", line 32, in <module> from pydicom.dataelem import DataElement File "C:\...\env38\lib\site-packages\pydicom\dataelem.py", line 18, in <module> from pydicom import config # don't import datetime_conversion directly File "C:\...\env38\lib\site-packages\pydicom\config.py", line 238, in <module> import pydicom.pixel_data_handlers.pylibjpeg_handler as pylibjpeg_handler # noqa File "C:\...\env38\lib\site-packages\pydicom\pixel_data_handlers\pylibjpeg_handler.py", line 59, in <module> import pylibjpeg File "C:\...\env38\lib\site-packages\pylibjpeg\__init__.py", line 38, in <module> add_handler() File "C:\...\env38\lib\site-packages\pylibjpeg\utils.py", line 24, in add_handler if handler not in pydicom.config.pixel_data_handlers: AttributeError: partially initialized module 'pydicom' has no attribute 'config' (most likely due to a circular import)

My environment
Output for: python -m pydicom.env_info

module	version
platform	Windows-10-10.0.19041-SP0
Python	3.8.7 (tags/v3.8.7:6503f05, Dec 21 2020, 17:43:54) [MSC v.1928 32 bit (Intel)]
pydicom	2.1.2
gdcm	module not found
jpeg_ls	module not found
numpy	1.19.5
PIL	8.1.0

My imports

from tkinter import *
from tkinter.ttk import *
import cv2
import numpy as np
import pydicom  
from PIL import ImageTk, Image

[darcymason]

Below, just simplifying the trace a little bit to make it easier to follow:

File "read_and_show_dicom.py", 
import pydicom 

File "...\pydicom\__init__.py", line 32, 
from pydicom.dataelem import DataElement 

File "...\pydicom\dataelem.py", line 18, in <module> 
from pydicom import config 

File "...\pydicom\config.py", line 238, in <module> 
import pydicom.pixel_data_handlers.pylibjpeg_handler as pylibjpeg_handler 

File "...\pydicom\pixel_data_handlers\pylibjpeg_handler.py", line 59, in <module> 
import pylibjpeg

File "...\pylibjpeg\__init__.py", line 38, in <module> 
add_handler() 

File "...\pylibjpeg\utils.py", line 24, in add_handler 
if handler not in pydicom.config.pixel_data_handlers: 

AttributeError: partially initialized module 'pydicom' has no attribute 'config' (most likely due to a circular import)

I'm wondering whether this would be okay if you imported pylibjpeg first before pydicom in the user code? However, pylibjpeg examples show importing pydicom first. Maybe @scaramallion can comment.

[scaramallion]

Hmm, with the latest pydicom you shouldn't need to import pylibjpeg manually, so I'd try removing that first. I'll take a look when I get a chance.