In [2]:
with open('Counting DNA Nucleotides Data.txt') as f:
dnastr = f.readline()
with open('Counting DNA Nucleotides Data.txt') as f:
dnastr = f.readline()
A=0;T=0;G=0;C=0;
for symb in dnastr:
if(symb=='A'): A += 1
if(symb=='T'): T += 1
if(symb=='G'): G += 1
if(symb=='C'): C += 1
print(A,C,G,T)
5 4 5 3