In [14]:

    

dna = "TGTTCCGTAGCGCATGCTAATACATCGAGGCCGACATCGAACTCATTTTTTGCTGACAGAGCCCAGCCAATATCTGTGCAGCACGTTGCGAAATCGCGTCCGCGTCCGCGTCAATTGGCATTTATCCGGCTTATCGGGTAGTCCCGTGTAAAGGCACTGATCCGAGCATCAAAATGTCTGGAAAATTTTTCGATGTCAGAGACGCAACATTGTAGCTGAAAAGTCGATATGGTAGAGGTCGGCGCCGAAGATCATGAAGCGGAATCCACCTTAGTTCTCAGAGTGCGTGCGTTGACAAAGTGTGTCGTGATTGGCGTCCCTTCGACGAAGGCCTTCTTTGTGGGGGCACATGAGGTCGCGATCCAGAATAGTTCATGAGTGCCTCTGTAATTGTCAGAATCAGACCGGCTCTCATGGGAGATTTTGGTAATTTCACGACTTGATTGCAAAATAATACGAACAGAGGGACAGCCTGTAATGCGTCAGCATGGGACCTACAAGAGTGTTCGTCGCGGGTGGCGATTGCTAATTCCAAGTGCGTATAGATCTGAGGGTACCTTGCTCGTCCATCTCCGCCGATCACGGGGAACGGGCATCAGGCGCTAATAAGTTACTGTTTTTTCGGCCCTACCGCACAGGGTAATAGCCACGCGGCTAGGTAGTTGATCAAGCCCTGAGGATAGACTCTCCGTAATGGTGACTCGGTGATCTTTGCGTTTCTTGGTTTAGATGGTCCGAAGATGGGATGGTCTCTGTCACTGCTGTTAGCATACCGCTATGGCCTGGAGCGTCGACAGCAAGTCTAATCCTTTATGTACCCGGTAATCACACTAATTATAACGTTCTTCCTAATCCATTGATGCCCAACTCCGAGCCAATCATTTGCTCAA"
reverse_dna = dna[::-1]
compliment = ""


    

In [15]:

    

for base in reverse_dna:
    if(base == "A"):
        compliment = compliment + "T"
    elif(base == "T"):
        compliment = compliment + "A"
    elif(base == "C"):
        compliment = compliment + "G"
    elif(base == "G"):
        compliment = compliment + "C"
        
print(compliment)


    

    




TTGAGCAAATGATTGGCTCGGAGTTGGGCATCAATGGATTAGGAAGAACGTTATAATTAGTGTGATTACCGGGTACATAAAGGATTAGACTTGCTGTCGACGCTCCAGGCCATAGCGGTATGCTAACAGCAGTGACAGAGACCATCCCATCTTCGGACCATCTAAACCAAGAAACGCAAAGATCACCGAGTCACCATTACGGAGAGTCTATCCTCAGGGCTTGATCAACTACCTAGCCGCGTGGCTATTACCCTGTGCGGTAGGGCCGAAAAAACAGTAACTTATTAGCGCCTGATGCCCGTTCCCCGTGATCGGCGGAGATGGACGAGCAAGGTACCCTCAGATCTATACGCACTTGGAATTAGCAATCGCCACCCGCGACGAACACTCTTGTAGGTCCCATGCTGACGCATTACAGGCTGTCCCTCTGTTCGTATTATTTTGCAATCAAGTCGTGAAATTACCAAAATCTCCCATGAGAGCCGGTCTGATTCTGACAATTACAGAGGCACTCATGAACTATTCTGGATCGCGACCTCATGTGCCCCCACAAAGAAGGCCTTCGTCGAAGGGACGCCAATCACGACACACTTTGTCAACGCACGCACTCTGAGAACTAAGGTGGATTCCGCTTCATGATCTTCGGCGCCGACCTCTACCATATCGACTTTTCAGCTACAATGTTGCGTCTCTGACATCGAAAAATTTTCCAGACATTTTGATGCTCGGATCAGTGCCTTTACACGGGACTACCCGATAAGCCGGATAAATGCCAATTGACGCGGACGCGGACGCGATTTCGCAACGTGCTGCACAGATATTGGCTGGGCTCTGTCAGCAAAAAATGAGTTCGATGTCGGCCTCGATGTATTAGCATGCGCTACGGAACA

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