First Machine Learning. https://machinelearningmastery.com/machine-learning-in-python-step-by-step/ Step by steps. # conda env create -f environment.yml # source activate iris35 gbm2.py https://github.com/Microsoft/LightGBM/issues/932 Reference Sample conda environment file http://blog.csdn.net/everlasting_188/article/details/60870653 http://blog.csdn.net/bitcarmanlee/article/details/77857194?locationNum=6&fps=1