FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning. FutureWarning: Default multi_class will be changed to in 0.22. Specify the multi_class option to silence this warning.

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:433: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.

  FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:460: FutureWarning: Default multi_class will be changed to 'auto' in 0.22. Specify the multi_class option to silence this warning.

  "this warning.", FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:433: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.

  FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:460: FutureWarning: Default multi_class will be changed to 'auto' in 0.22. Specify the multi_class option to silence this warning.

  "this warning.", FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:433: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.

  FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:460: FutureWarning: Default multi_class will be changed to 'auto' in 0.22. Specify the multi_class option to silence this warning.

  "this warning.", FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:433: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.

  FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:460: FutureWarning: Default multi_class will be changed to 'auto' in 0.22. Specify the multi_class option to silence this warning.

  "this warning.", FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:433: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.

  FutureWarning)

/anaconda3/envs/tensorflow/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:460: FutureWarning: Default multi_class will be changed to 'auto' in 0.22. Specify the multi_class option to silence this warning.

  "this warning.", FutureWarning)

解決方式

LogisticRegression(multi_class='auto', solver='lbfgs')

參考
https://zhuanlan.zhihu.com/p/54363528