one_hot_pandas.py

import pandas as pd

def one_hot_column(df, column, labels, prefix=None, **kwargs):
    dummies = pd.get_dummies(df[column], prefix=prefix or column, **kwargs)
    for label in labels:
        if f"{column}_{label}" not in dummies.columns:
            dummies[f"{column}_{label}"] = 0
    return df.join(dummies)

if __name__ == "__main__":
    import pandas as pd 
    df = pd.DataFrame({"x": list("aabc"), "y": [1, 2, 3, 4]})
    labels = list("abcd")

    print(one_hot_column(df, "x", labels))