Determine the total length of all the contigs for each strain

def find_genome_length(self):
        """
        Determine the total length of all the contigs for each strain
        """
        for sample in self.metadata:
            # Use the sum() method to add all the contig lengths in the list
            sample[self.analysistype].genome_length = sum(sample[self.analysistype].contig_lengths)