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test_size=0.2) print(f"{len(df_train)} samples in train") # 30950 samples in train df_val, df_test = train_test_split(df_val, stratify=df_val['target'], test_size=0.5) print(f"{len(df_val)} samples in val") print(f"{len(df_test)} samples in test") # 3869 samples in train # 3869 samples in test Now