Create a report of the ePCR-calculated toxin profiles

def epcr_report(self):
        """
        Create a report of the ePCR-calculated toxin profiles
        """
        logging.info('Creating {at} report'.format(at=self.analysistype))
        with open(os.path.join(self.reportpath, '{at}.csv'.format(at=self.analysistype)), 'w') as report:
            data = 'Strain,ToxinProfile\n'
            for sample in self.metadata:
                data += '{sn},{tp}\n'.format(sn=sample.name,
                                             tp=sample[self.analysistype].toxinprofile)
            # Write the data to the report
            report.write(data)