let say i have a file with random letters of A, AB, C, CD, AC, A, D, CD, DD,
C, B, AB, CD, AB
How do i count the occurrence of each individual item.
def occurence(name):
infile = open('bloodtype1.txt', 'r')
lst = infile.read()
infile.close()
print(lst.count('AB')) # 3
print(lst.count('CD')) # 2
print(lst.count('DD'))# 1
i know i can do lst.count("AB") it will give me 3 but if i were to do
lst.count("A") it would give me 6 what I am having trouble with is just getting
the occurrence of the A by itself to give me 1 since there is just one
occurrence of it and would need to do the same for c and d with out it counting
the them in the occurrence of AC and DD or CD.
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