causalml/inference/tree/utils.py [39:61]:
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    '''
    Encoding string features.

    Args
    ----

    dfx : dataframe
        The inputs data dataframe.

    kpix : string
        The column of the feature.

    kpi1 : list
        The list of feature names.

    Returns
    -------
    dfx : DataFrame
        The updated dataframe containing the encoded data.

    kpi1 : list
        The updated feature names containing the new dummy feature names.
    '''
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causalml/inference/tree/utils.py [75:97]:
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    '''
    Encoding string features.

    Args
    ----

    dfx : dataframe
        The inputs data dataframe.

    kpix : string
        The column of the feature.

    kpi1 : list
        The list of feature names.

    Returns
    -------
    dfx : DataFrame
        The updated dataframe containing the encoded data.

    kpi1 : list
        The updated feature names containing the new dummy feature names.
    '''
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