FrequencyMap Function

def FrequentWords( str, int ):
    numb = {}
    for i in range(len(str)-int+1):
        if str[i:i+int] not in numb:
            numb[str[i:i+int]] = 0
        numb[str[i:i+int]] += 1
    maxim = max(numb.values())
    res = []
    for kmers in numb:
        if numb[kmers] == maxim:
            res.append(kmers)
    return res    
  
str = 'ACGTTACGTTACGTCGACTGCACTACG'
int = 3
print(FrequentWords( str, int ))
# Copy your FrequencyMap() function here.
def FrequencyMap(DNA, int):
    freq = {}
    n = len(DNA)
    for i in range(n-int+1):
        Pattern = DNA[i:i+int]
        freq[Pattern] = 0
        for i in range(n-int+1):
            if (Pattern == DNA[i:i+int]):
                freq[Pattern]=freq[Pattern]+1
    return freq
DNA= 'ACGATTTACGAACGTTACGTAGCTAGCTACGTAC'
int = 3
print (FrequencyMap(DNA, int))