Specify list of possible values for Pandas get_dummies

Question

Suppose I have a Pandas DataFrame like the below and I\'m encoding categorical_1 for training in scikit-learn:

data = {\'numeric_1\':[12.1, 3.2, 5.5, 6.8, 9.9],          


        

Answer 1

To handle the mismatch between the set of categorical values in train and test sets I used;

    length = train_categorical_data.shape[0]
    empty_col = np.zeros((length,1))
    test_categorical_data_processed = pd.DataFrame()
    for col in train_categorical_data.columns:
        test_categorical_data_processed[col] = test_categorical_data.get(col, empty_col)