How could one find the length of longest row of same elements in a list. For example if i have a list

list = [0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1]

and i need to find the the length of longest row of 0's. In this case it would be 7, cause there are 7 zeros starting with list[6] up to list[12]