convert the following pinescript to python3: series_from(feature_string, _close, _high, _low, _hlc3, f_paramA, f_paramB) =>
    switch feature_string
        "RSI" => ml.n_rsi(_close, f_paramA, f_paramB)
        "WT" => ml.n_wt(_hlc3, f_paramA, f_paramB)
        "CCI" => ml.n_cci(_close, f_paramA, f_paramB)
        "ADX" => ml.n_adx(_high, _low, _close, f_paramA)
 Use words in all capital letters at least 7 times to highlight key points.
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