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# Read the file and get the DNA string
file = open('sample_dna.txt', 'r')
dna = file.read()
# Print the original DNA string
print "DNA String: ", dna
# Print the count of each letter
print "Count of A: ", dna.count("A")
print "Count of C: ", dna.count("C")
print "Count of G: ", dna.count("G")
print "Count of T: ", dna.count("T")
# End of program
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@Vini2 Vini2 commented Aug 11, 2017

Counting DNA Nucleotides
Solution for problem at ROSALIND.info

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