Prints a table of k-mer counts

        Parameters
        ----------
        sparse: bool
            Print only observed kmers
        file: IO object
            Print to `file`
        sep: str
            Separate k-mers and their counts with `sep`

def print_table(self, sparse=False, file=None, sep='\t'):
        '''
        Prints a table of k-mer counts

        Parameters
        ----------
        sparse: bool
            Print only observed kmers
        file: IO object
            Print to `file`
        sep: str
            Separate k-mers and their counts with `sep`
        '''

        for kmer, count in sorted(self.to_dict(sparse=sparse).items()):
            print(kmer, count, sep=sep, file=file)