Complete The Pattern #6 - Odd Ladder

#https://www.codewars.com/kata/5574940eae1cf7d520000076/solutions/python/following/best_practice

def pattern(n):
    # Happy Coding ^_^
    s = ""
    for i in range(1,n+1,2):
        s += str(i)*i + '\n'
    return s[:-1]