No module found error after XGBoost installation via Homebrew

[hernandezurbina]

Hi, I installed xgboost via Homebrew with the intention to use it inside a Python virtualenv. The installation went smoothly, but when doing "import xgboost" in Python (inside or outside a virtualenv) I receive a "No module named xgboost" error. Did I miss anything during installation? Thanks!

[trivialfis]

@hcho3 Could you please help verifying?

[hcho3]

Current Homebrew package only installs the CLI application and not the Python binding. There's an ongoing discussion to include the Python binding as well: Homebrew/homebrew-core#50467. (This PR also upgrades XGBoost to 1.0.0.)

For now, you can follow steps in #4949 (comment) to install the Python package.

[hcho3]

@hernandezurbina We just release XGBoost version 1.1.0, and starting from this release, we publish a Python wheel specifically built for Mac OS: https://pypi.org/project/xgboost/1.1.0/#files. You can install it by running

pip install xgboost==1.1.0

Note: you should first install libomp by running brew install libomp. We currently support Mac OS High Sierra, Mojave, and Catalina.