Classifier replaced

[sawula]

Classifier.cart should be replaced by Classifier.smileCart in

• https://github.com/giswqs/earthengine-py-examples/blob/master/MachineLearning/cart_classifier.py
• https://github.com/giswqs/earthengine-py-notebooks/blob/master/MachineLearning/cart_classifier.ipynb

See "Announcement: Old classifiers will stop working on March 1."

There are probably other instances where classifiers need to be updated, but you would know them better than I !