fraserw
imp Module Deprecated for Python v3.12 and Later
Hi Folks,
Hope you're well. I'm getting in touch to let you know about an issue I ran into while trying to install TRIPPy with the latest versions of python. I've created a conda environment called trippy and attempted to install TRIPPy as described in this repo's README (i.e. dependencies installed via conda and TRIPPy installed with pip). On trying to import trippy in python I get the following error.
Python 3.13.3 | packaged by conda-forge | (main, Apr 14 2025, 20:44:03) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import trippy
Traceback (most recent call last):
File "<python-input-0>", line 1, in <module>
import trippy
File "/home/tom/miniforge3/envs/trippy/lib/python3.13/site-packages/trippy/__init__.py", line 6, in <module>
from . import psf,pill,bgFinder
File "/home/tom/miniforge3/envs/trippy/lib/python3.13/site-packages/trippy/psf.py", line 26, in <module>
import imp
ModuleNotFoundError: No module named 'imp'
Running conda install imp looks like it does something, but trying to import trippy afterwards will just give me the same error message as above. Running pip install imp gives
(trippy) tom@C1-10P:~$ pip install imp
ERROR: Could not find a version that satisfies the requirement imp (from versions: none)
ERROR: No matching distribution found for imp
I searched online to find out what's going on and I found this stack overflow page stating that imp is now deprecated in favour of importlib. I've confirmed that importing imp in python v3.11 gives the deprecation message shown in that post. I thought about forking TRIPPy and updating the imp to importlib in my own copy and submitting a pull request, but I don't know how you'd want to handle this issue for others still running TRIPPy with earlier versions of Python. I've found that TRIPPy does install with python v3.11, but that is the last version that supports imp. Reverting python all the way back to v3.5 as suggested in TRIPPy's README causes other dependency issues for me when imp is installed through conda. Python v3.6 now seems to be the earliest version of python I can use that would also be compatible with imp.
In short, if you're not aware of this you might want to look into it. Running on python v3.11 seems to work ok for now, but you might want to implement a more permanent fix for this in the long run.
Cheers, Tom
Hey @tseccull , I'm not running such as new version as you but I did get trippy running on Python 3.9 with a few small changes which are on my fork: https://github.com/talister/trippy (@fraserw I'm happy to send you a PR for these changes if you want/like)
Hang tight gents. Changes incoming in the next few days that will solve this and other issues.
@tseccull and @talister I have updated the repo code to no longer use imp and pyfits. Please test!