class SymptomHistogramByBatchcodeTableFactory:

    @staticmethod
    def createSymptomHistogramByBatchcodeTable(symptomByBatchcodeTable):
        return (
            symptomByBatchcodeTable
                .groupby(symptomByBatchcodeTable.index.names)
                ['SYMPTOM'].value_counts()
                .to_frame(name = 'SYMPTOM_COUNT_BY_VAX_LOT')
              )