no module named cross_validation code example

Example 1: ModuleNotFoundError: No module named 'sklearn.cross_validation'

Substitute cross_validation to model_selection

Example 2: No module named 'sklearn.cross_validation'

#Substitute cross_validation to model_selection
from sklearn.model_selection import train_test_split

Example 3: ModuleNotFoundError: No module named 'sklearn.cross_validation'

ImportError: No module named sklearn.cross_validation