fixes #1187 error "Please install necessary libs for CatBoostModel." #1246
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Description
When running 'examples/workflow_by_code.ipynb' in jupyter notebook , you get the following misleading error #1187
now the message displayed when running the code is "ModuleNotFoundError. CatBoostModel and CatBoostModel are skipped. (optional: maybe installing lightgbm can fix it.)" that is similar to the other non mandatory packages to install.
Motivation and Context
check #
How Has This Been Tested?
pytest qlib/tests/test_all_pipeline.py
under upper directory ofqlib
.Screenshots of Test Results (if appropriate):
Types of changes