def encode(dna, peptide):
rna = transcribe(dna)
reverse_complement_rna = transcribe(reverse_complement(dna))
rna_substr_len = len(peptide) * 3
return [dna[i:i + rna_substr_len] for i in range(0, len(rna) - rna_substr_len + 1) if
translate(rna[i:i + rna_substr_len]) == peptide or
translate(reverse_complement_rna[len(rna) - (i + rna_substr_len):len(rna) - i]) == peptide]
def test_transcribe():
input = 'ACGT'
expected = 'ACGU'
actual = transcribe(input)
assert(expected == actual)
