import argparse
import re


def Repetition(dna_a, dna_b):
    repetition = {}
    cont1 = 0
    while cont1 < len(dna_a):
        cont2 = 0
        if dna_a[cont1] not in repetition.keys():
            while cont2 < len(dna_b):
                if (dna_a[cont1] == dna_b[cont2]):
                    if dna_a[cont1] not in repetition.keys():
                        repetition[dna_a[cont1]] = 1
                    else:
                        repetition[dna_a[cont1]] = 1 + repetition[dna_a[cont1]]
                cont2 += 1
        cont1 += 1
    return repetition


def to_Match(dna_a, dna_b):
    match = 0
    cont1 = 0
    while cont1 < len(dna_a):
        if (dna_a[cont1] == dna_b[cont1]):
            match += 1
        cont1 += 1
    return (match * 100)/len(dna_a)

# print(Repeticoes('ACTGCTG', 'AACGCTG'))
print(to_Match('ACTGCTG', 'AACGCTG'))