Max Consecutive Ones (LC-0485)

class Solution:
    def findMaxConsecutiveOnes(self, nums):
        cmax = 0
        prev = None
        for n in nums:
            if prev != 1:
                curr = 0
            if n == 1:
                curr = curr + 1
            prev = n
            cmax = max(cmax, curr)
        return cmax