Transform a GTF dataframe into a bed dataframe

    :param inGTF: GTF dataframe for transformation
    :param name: field of the GTF data frame to be use for the bed 'name' positon

    returns: a bed dataframe with the corresponding bed fiels: 'chrom','chromStart','chromEnd','name','score','strand'

def GTFtoBED(inGTF,name):
    """
    Transform a GTF dataframe into a bed dataframe

    :param inGTF: GTF dataframe for transformation
    :param name: field of the GTF data frame to be use for the bed 'name' positon

    returns: a bed dataframe with the corresponding bed fiels: 'chrom','chromStart','chromEnd','name','score','strand'
    """

    bed=inGTF.copy()
    bed.reset_index(inplace=True, drop=True)
    if name not in bed.columns.tolist():
        field=retrieve_GTF_field(name, bed)
        bed=pd.concat([bed,field],axis=1)
    bed=bed[['seqname','start','end',name,'score','strand']]
    bed.columns=['chrom','chromStart','chromEnd','name','score','strand']
    bed.drop_duplicates(inplace=True)
    bed.reset_index(inplace=True,drop=True)
    return bed