Overlapping count of substring in a string in Python

Question

I want to find all the counts (overlapping and non-overlapping) of a sub-string in a string. I found two answers one of which is using regex which is not my intention and t

Answer 1

Does this do the trick?

def count(string, substring):
    n = len(substring)
    cnt = 0
    for i in range(len(string) - n):
        if string[i:i+n] == substring:
            cnt += 1
    return cnt

print count('ababaa', 'aba') # 2

I don't know if there's a more efficient solution, but this should work.