[ci][python] apply isort to examples/python-guide/advanced_example.py #3958 (#3961)
[ci][python] apply isort to examples/python-guide/advanced_example.py #3958 (#3961)


henry0312/LightGBM,microsoft/LightGBM,henry0312/LightGBM,henry0312/LightGBM,henry0312/LightGBM,microsoft/LightGBM,henry0312/LightGBM,microsoft/LightGBM,microsoft/LightGBM,microsoft/LightGBM