ImportError: cannot import name 'SimplicialComplex'

[amiltonwong]

Hi, @bruel-gabrielsson ,

I had followed your guide on building C++ extensions, and the building process is finished without error. However, when import the packages as follows:

>>> import torch
>>> from topologylayer.nn import LevelSetLayer1D, SumBarcodeLengths

I got the following error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/data/code13/TopologyLayer/topologylayer/__init__.py", line 1, in <module>
    import topologylayer.nn
  File "/data/code13/TopologyLayer/topologylayer/nn/__init__.py", line 3, in <module>
    from .levelset import LevelSetLayer, LevelSetLayer1D, LevelSetLayer2D
  File "/data/code13/TopologyLayer/topologylayer/nn/levelset.py", line 1, in <module>
    from ..functional.sublevel import SubLevelSetDiagram
  File "/data/code13/TopologyLayer/topologylayer/functional/sublevel.py", line 6, in <module>
    from .persistence import SimplicialComplex, persistenceForwardCohom, persistenceBackward, persistenceForwardHom
ImportError: cannot import name 'SimplicialComplex'

For my another virtual environment, I use pip install git+https://github.com/bruel-gabrielsson/TopologyLayer.git to install it globally and the import commands run successfully.
Any hints to solve this issue?
THX!

My system information is the following:
operating system : ubuntu 16.04
Python version, environment setup: Python 3.6.5, with conda environment

[soham0209]

Adding to the previous comment:
Installing with pip install git+https://github.com/bruel-gabrielsson/TopologyLayer.git and running your examples in jupyter notebook reproduces the problem. However if I run as:
python3 holes.py
The program executes successfully.

[stal12]

@amiltonwong have you tried changing the current directory? It worked for me.
Check this answer.

[DanielNolte]

I ran into the same issues on Windows 10 with Python 3.10.4.

After creating a new environment, installing dependencies, and installing TopologyLayer, I realized the topologylayer folder was inside the .egg site-package folder: tmp/.conda/envs/ACTIVE_ENV/lib/site-packages/topologylayer-0.0.0-py3.10-win-amd64.egg/topologylayer

To fix the issue, I moved the topologylayer folder from tmp/.conda/envs/ACTIVE_ENV/lib/site-packages/topologylayer-0.0.0-py3.10-win-amd64.egg to tmp/.conda/envs/ACTIVE_ENV/lib/site-packages/, and now the import works