| def get_kmers(sequence, size=3): | |
| """ | |
| Convert a nucleotide sequence into k-mers (default: 3-mers). | |
| Example: 'ATGC' -> 'ATG TGC' | |
| """ | |
| if not isinstance(sequence, str): | |
| return "" | |
| return " ".join([sequence[i:i+size] for i in range(len(sequence) - size + 1)]) | |