dnatorna.py

our_str = 'TTGACCATGGAAGTAACCACCTCCGTTTAACCTACAGGACCATTCGCGAAGCGTAAAACCCTTGTCCGAGAGGTTAGCTGAGTGTGATCCAGCTCCTGAATTGACAGGTTGTACTCCTGAGACCCTGCAAGGTAGCAGGAGGTCATTCGCAGGACAACGGGTATGGACTTACTCGCATAGAAAATTCTCCAGAAATTCCTAGCTCCAAGAGATCGTTGCCCTTGTAGACTTTTAATAAAGCGACCCCGAGTAGCCCAATGAGCAGGTTGTGACCAGCGGACACGATGAGATTTTGGTCAGCGGCCTTGAAAAAAGTAATAAGGGCATGAGCAGTGATGGGTGTGATTAGTTTCTTATCCACCAAGAACAGACACCTTGAGGATCGTGACAGGCTCTTCTTATCCGTCACGCATGTTCTGATTTATGGAAAAAGGAGCCGGGCGGAGTCCCGACAACATGAGCTGAGCAATGAGGTGATCGTATCTTAAGATACATGATGCTTTTCACGATATAGAGCGGGGTCGGATTTATAACGCAAGGAATCGAGCATCGGAAAAGGAACAGTACCAACAAAACCAGCTTACGCGGACCTTTCTATACGCTTGCGAGTGTTATATAAACACCGATGCCGCCTCTATGCGGCACTTCCAGACGTCGAAGAGCAACTTGTCAATTAATCGAGCCTGTAAATTACGTTACACCTTTAGTGGTCGAGGGAGTTGCTGCCCCCGCCGGTCTGTGAGAACAACACTAAAAACCCCGGCCGTCATACCATCTGACCGAATTCTGCGCACGATGTAGCGTACGATCGTTTTGACTACCTGAATTGTAGCATCAAGCACCACAATGTGAGAATTCCTGTTTCGTGTCATCCGCTCCTCATCAACACCACACAGCCTGTGACGTTACCAAACATCCGTGGGACCTATGGTAGGTGCCCGTATGTACCTTGGCTCACTTTTGACCACAGATCCCTAGAAACCGCCCCATGAAGACCTAT'
import string
new_str = string.replace(our_str, 'T', 'U')
print(new_str)