pandas_utilities.py 文件源码

def series_to_ascii(series):
    """Change columns to lowercase strings inplace.

    Arguments:
        series (pandas.Series): series to be modified.

    Returns:
        pandas.Series: series with lowercase and no symbols.

    """
    warnings.warn("Function will be deprecated because it is not used.",
                  category=DeprecationWarning)
    series = series.copy(True)
    series = series.apply(unidecode)
    series = series.str.lower()
    series = series.str.replace('[^a-zA-Z0-9_]', '_')

    return series