Collatz Sequence

#Collatz Sequence
def isEven(n):
    return n % 2 == 0

def getNextCollatzSeq(n):
    if isEven(n):
        return n // 2
    else:
        return 3*n + 1

def printCollatzSeq(n):
    s = n
    while (s > 1):
        print(s, end=",")
        s = getNextCollatzSeq(s)
    print(s)

def getCollatzSeqLen(n):
    s = n
    i = 0
    while (s > 1):
        s = getNextCollatzSeq(s)
        i += 1;
    return i

maxL = 0
for k in range(100):
    n = getCollatzSeqLen(k)
    if (maxL < n):
        maxL = n
    print(n, end=",")
print(" max length:", maxL)