AttributeError: Can't pickle local object 'preprocess_dataset.<locals>.<lambda>' about cg-schnet

[NiklasGebauer]

Hi,
it seems as if the multi-threading in the pre-processing does not work on your machine (not sure if it is a problem of packages or Windows in general as I only tested the code on Linux systems).
You can deactivate the multi-threading by setting n_threads=0 in line 310 of qm9_data.py:

cG-SchNet/qm9_data.py

Line 310 in 53d7383

n_threads=8, n_mols_per_thread=125, logging_print=True,

Pre-processing will take a bit longer but this should prevent the error.

[Zbless]

Thank you very much. It works