Code fragment metadata

hasIdentifier: https://padme-analytics.de/pht/codeFragment/a008db500f90dbb5bbbce885460d9e0e1d684ddedbf413b01e16e4696e87dc52
hasContent: x_train, x_val, y_train, y_val = train_test_split(x_train, y_train, test_size=0.20, random_state=2)

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