This occurs because of the prepended Step{}_Engine_{}_ strings that pfachain puts in.
Minimal reproducible example: download this gist and run
# taken from the tutorial https://github.com/opendatagroup/hadrian/wiki/Basic-random-forest
python ex.py
# modified random forest example using pfachain
python ex_chain.py
This occurs because of the prepended
Step{}_Engine_{}_
strings that pfachain puts in.Minimal reproducible example: download this gist and run
The second script fails with
Related issue: #30