為什么我在python 3.6的jupyter筆記本中收到警告，我該如何解決？

Question

我正在嘗試運行以下代碼，而我已經看到了很多這樣的警告，我只是想知道如何阻止它們發生，究竟是什么導致了這些警告，

當我運行以下代碼時，為什么會收到以下警告，

# Test options and evaluation metric
seed = 7
scoring = 'accuracy'

results = []
names = []

# evaluate each model in turn
for name, model in models:
    kfold = model_selection.KFold(n_splits=10, random_state=seed)
    cv_results = model_selection.cross_val_score(
        model, X_train, Y_train, cv=kfold, scoring=scoring)
    results.append(cv_results)
    names.append(name)
    msg = "%s: %f (%f)" % (name, cv_results.mean(), cv_results.std())
    print(msg)

警告：

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:432: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.
  FutureWarning)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:459: FutureWarning: Default multi_class will be changed to 'auto' in 0.22. Specify the multi_class option to silence this warning.
  "this warning.", FutureWarning)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/sklearn/linear_model/logistic.py:432: FutureWarning: Default solver will be changed to 'lbfgs' in 0.22. Specify a solver to silence this warning.
  FutureWarning)

Answer 1

這也發生在我身上。 它警告您在代碼中編寫的即將發布的python版本中的語法更改。 如果在將來的版本中運行相同的代碼，則可能無法按預期運行。